1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * mac80211 configuration hooks for cfg80211 4 * 5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 6 * Copyright 2013-2015 Intel Mobile Communications GmbH 7 * Copyright (C) 2015-2017 Intel Deutschland GmbH 8 * Copyright (C) 2018-2022 Intel Corporation 9 */ 10 11 #include <linux/ieee80211.h> 12 #include <linux/nl80211.h> 13 #include <linux/rtnetlink.h> 14 #include <linux/slab.h> 15 #include <net/net_namespace.h> 16 #include <linux/rcupdate.h> 17 #include <linux/fips.h> 18 #include <linux/if_ether.h> 19 #include <net/cfg80211.h> 20 #include "ieee80211_i.h" 21 #include "driver-ops.h" 22 #include "rate.h" 23 #include "mesh.h" 24 #include "wme.h" 25 26 static void ieee80211_set_mu_mimo_follow(struct ieee80211_sub_if_data *sdata, 27 struct vif_params *params) 28 { 29 bool mu_mimo_groups = false; 30 bool mu_mimo_follow = false; 31 32 if (params->vht_mumimo_groups) { 33 u64 membership; 34 35 BUILD_BUG_ON(sizeof(membership) != WLAN_MEMBERSHIP_LEN); 36 37 memcpy(sdata->vif.bss_conf.mu_group.membership, 38 params->vht_mumimo_groups, WLAN_MEMBERSHIP_LEN); 39 memcpy(sdata->vif.bss_conf.mu_group.position, 40 params->vht_mumimo_groups + WLAN_MEMBERSHIP_LEN, 41 WLAN_USER_POSITION_LEN); 42 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MU_GROUPS); 43 /* don't care about endianness - just check for 0 */ 44 memcpy(&membership, params->vht_mumimo_groups, 45 WLAN_MEMBERSHIP_LEN); 46 mu_mimo_groups = membership != 0; 47 } 48 49 if (params->vht_mumimo_follow_addr) { 50 mu_mimo_follow = 51 is_valid_ether_addr(params->vht_mumimo_follow_addr); 52 ether_addr_copy(sdata->u.mntr.mu_follow_addr, 53 params->vht_mumimo_follow_addr); 54 } 55 56 sdata->vif.bss_conf.mu_mimo_owner = mu_mimo_groups || mu_mimo_follow; 57 } 58 59 static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata, 60 struct vif_params *params) 61 { 62 struct ieee80211_local *local = sdata->local; 63 struct ieee80211_sub_if_data *monitor_sdata; 64 65 /* check flags first */ 66 if (params->flags && ieee80211_sdata_running(sdata)) { 67 u32 mask = MONITOR_FLAG_COOK_FRAMES | MONITOR_FLAG_ACTIVE; 68 69 /* 70 * Prohibit MONITOR_FLAG_COOK_FRAMES and 71 * MONITOR_FLAG_ACTIVE to be changed while the 72 * interface is up. 73 * Else we would need to add a lot of cruft 74 * to update everything: 75 * cooked_mntrs, monitor and all fif_* counters 76 * reconfigure hardware 77 */ 78 if ((params->flags & mask) != (sdata->u.mntr.flags & mask)) 79 return -EBUSY; 80 } 81 82 /* also validate MU-MIMO change */ 83 monitor_sdata = wiphy_dereference(local->hw.wiphy, 84 local->monitor_sdata); 85 86 if (!monitor_sdata && 87 (params->vht_mumimo_groups || params->vht_mumimo_follow_addr)) 88 return -EOPNOTSUPP; 89 90 /* apply all changes now - no failures allowed */ 91 92 if (monitor_sdata) 93 ieee80211_set_mu_mimo_follow(monitor_sdata, params); 94 95 if (params->flags) { 96 if (ieee80211_sdata_running(sdata)) { 97 ieee80211_adjust_monitor_flags(sdata, -1); 98 sdata->u.mntr.flags = params->flags; 99 ieee80211_adjust_monitor_flags(sdata, 1); 100 101 ieee80211_configure_filter(local); 102 } else { 103 /* 104 * Because the interface is down, ieee80211_do_stop 105 * and ieee80211_do_open take care of "everything" 106 * mentioned in the comment above. 107 */ 108 sdata->u.mntr.flags = params->flags; 109 } 110 } 111 112 return 0; 113 } 114 115 static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata, 116 struct cfg80211_mbssid_config params) 117 { 118 struct ieee80211_sub_if_data *tx_sdata; 119 120 sdata->vif.mbssid_tx_vif = NULL; 121 sdata->vif.bss_conf.bssid_index = 0; 122 sdata->vif.bss_conf.nontransmitted = false; 123 sdata->vif.bss_conf.ema_ap = false; 124 125 if (sdata->vif.type != NL80211_IFTYPE_AP || !params.tx_wdev) 126 return -EINVAL; 127 128 tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params.tx_wdev); 129 if (!tx_sdata) 130 return -EINVAL; 131 132 if (tx_sdata == sdata) { 133 sdata->vif.mbssid_tx_vif = &sdata->vif; 134 } else { 135 sdata->vif.mbssid_tx_vif = &tx_sdata->vif; 136 sdata->vif.bss_conf.nontransmitted = true; 137 sdata->vif.bss_conf.bssid_index = params.index; 138 } 139 if (params.ema) 140 sdata->vif.bss_conf.ema_ap = true; 141 142 return 0; 143 } 144 145 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, 146 const char *name, 147 unsigned char name_assign_type, 148 enum nl80211_iftype type, 149 struct vif_params *params) 150 { 151 struct ieee80211_local *local = wiphy_priv(wiphy); 152 struct wireless_dev *wdev; 153 struct ieee80211_sub_if_data *sdata; 154 int err; 155 156 err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params); 157 if (err) 158 return ERR_PTR(err); 159 160 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 161 162 if (type == NL80211_IFTYPE_MONITOR) { 163 err = ieee80211_set_mon_options(sdata, params); 164 if (err) { 165 ieee80211_if_remove(sdata); 166 return NULL; 167 } 168 } 169 170 return wdev; 171 } 172 173 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) 174 { 175 ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); 176 177 return 0; 178 } 179 180 static int ieee80211_change_iface(struct wiphy *wiphy, 181 struct net_device *dev, 182 enum nl80211_iftype type, 183 struct vif_params *params) 184 { 185 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 186 struct ieee80211_local *local = sdata->local; 187 struct sta_info *sta; 188 int ret; 189 190 ret = ieee80211_if_change_type(sdata, type); 191 if (ret) 192 return ret; 193 194 if (type == NL80211_IFTYPE_AP_VLAN && params->use_4addr == 0) { 195 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); 196 ieee80211_check_fast_rx_iface(sdata); 197 } else if (type == NL80211_IFTYPE_STATION && params->use_4addr >= 0) { 198 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 199 200 if (params->use_4addr == ifmgd->use_4addr) 201 return 0; 202 203 sdata->u.mgd.use_4addr = params->use_4addr; 204 if (!ifmgd->associated) 205 return 0; 206 207 mutex_lock(&local->sta_mtx); 208 sta = sta_info_get(sdata, ifmgd->bssid); 209 if (sta) 210 drv_sta_set_4addr(local, sdata, &sta->sta, 211 params->use_4addr); 212 mutex_unlock(&local->sta_mtx); 213 214 if (params->use_4addr) 215 ieee80211_send_4addr_nullfunc(local, sdata); 216 } 217 218 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { 219 ret = ieee80211_set_mon_options(sdata, params); 220 if (ret) 221 return ret; 222 } 223 224 return 0; 225 } 226 227 static int ieee80211_start_p2p_device(struct wiphy *wiphy, 228 struct wireless_dev *wdev) 229 { 230 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 231 int ret; 232 233 mutex_lock(&sdata->local->chanctx_mtx); 234 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 235 mutex_unlock(&sdata->local->chanctx_mtx); 236 if (ret < 0) 237 return ret; 238 239 return ieee80211_do_open(wdev, true); 240 } 241 242 static void ieee80211_stop_p2p_device(struct wiphy *wiphy, 243 struct wireless_dev *wdev) 244 { 245 ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); 246 } 247 248 static int ieee80211_start_nan(struct wiphy *wiphy, 249 struct wireless_dev *wdev, 250 struct cfg80211_nan_conf *conf) 251 { 252 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 253 int ret; 254 255 mutex_lock(&sdata->local->chanctx_mtx); 256 ret = ieee80211_check_combinations(sdata, NULL, 0, 0); 257 mutex_unlock(&sdata->local->chanctx_mtx); 258 if (ret < 0) 259 return ret; 260 261 ret = ieee80211_do_open(wdev, true); 262 if (ret) 263 return ret; 264 265 ret = drv_start_nan(sdata->local, sdata, conf); 266 if (ret) 267 ieee80211_sdata_stop(sdata); 268 269 sdata->u.nan.conf = *conf; 270 271 return ret; 272 } 273 274 static void ieee80211_stop_nan(struct wiphy *wiphy, 275 struct wireless_dev *wdev) 276 { 277 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 278 279 drv_stop_nan(sdata->local, sdata); 280 ieee80211_sdata_stop(sdata); 281 } 282 283 static int ieee80211_nan_change_conf(struct wiphy *wiphy, 284 struct wireless_dev *wdev, 285 struct cfg80211_nan_conf *conf, 286 u32 changes) 287 { 288 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 289 struct cfg80211_nan_conf new_conf; 290 int ret = 0; 291 292 if (sdata->vif.type != NL80211_IFTYPE_NAN) 293 return -EOPNOTSUPP; 294 295 if (!ieee80211_sdata_running(sdata)) 296 return -ENETDOWN; 297 298 new_conf = sdata->u.nan.conf; 299 300 if (changes & CFG80211_NAN_CONF_CHANGED_PREF) 301 new_conf.master_pref = conf->master_pref; 302 303 if (changes & CFG80211_NAN_CONF_CHANGED_BANDS) 304 new_conf.bands = conf->bands; 305 306 ret = drv_nan_change_conf(sdata->local, sdata, &new_conf, changes); 307 if (!ret) 308 sdata->u.nan.conf = new_conf; 309 310 return ret; 311 } 312 313 static int ieee80211_add_nan_func(struct wiphy *wiphy, 314 struct wireless_dev *wdev, 315 struct cfg80211_nan_func *nan_func) 316 { 317 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 318 int ret; 319 320 if (sdata->vif.type != NL80211_IFTYPE_NAN) 321 return -EOPNOTSUPP; 322 323 if (!ieee80211_sdata_running(sdata)) 324 return -ENETDOWN; 325 326 spin_lock_bh(&sdata->u.nan.func_lock); 327 328 ret = idr_alloc(&sdata->u.nan.function_inst_ids, 329 nan_func, 1, sdata->local->hw.max_nan_de_entries + 1, 330 GFP_ATOMIC); 331 spin_unlock_bh(&sdata->u.nan.func_lock); 332 333 if (ret < 0) 334 return ret; 335 336 nan_func->instance_id = ret; 337 338 WARN_ON(nan_func->instance_id == 0); 339 340 ret = drv_add_nan_func(sdata->local, sdata, nan_func); 341 if (ret) { 342 spin_lock_bh(&sdata->u.nan.func_lock); 343 idr_remove(&sdata->u.nan.function_inst_ids, 344 nan_func->instance_id); 345 spin_unlock_bh(&sdata->u.nan.func_lock); 346 } 347 348 return ret; 349 } 350 351 static struct cfg80211_nan_func * 352 ieee80211_find_nan_func_by_cookie(struct ieee80211_sub_if_data *sdata, 353 u64 cookie) 354 { 355 struct cfg80211_nan_func *func; 356 int id; 357 358 lockdep_assert_held(&sdata->u.nan.func_lock); 359 360 idr_for_each_entry(&sdata->u.nan.function_inst_ids, func, id) { 361 if (func->cookie == cookie) 362 return func; 363 } 364 365 return NULL; 366 } 367 368 static void ieee80211_del_nan_func(struct wiphy *wiphy, 369 struct wireless_dev *wdev, u64 cookie) 370 { 371 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 372 struct cfg80211_nan_func *func; 373 u8 instance_id = 0; 374 375 if (sdata->vif.type != NL80211_IFTYPE_NAN || 376 !ieee80211_sdata_running(sdata)) 377 return; 378 379 spin_lock_bh(&sdata->u.nan.func_lock); 380 381 func = ieee80211_find_nan_func_by_cookie(sdata, cookie); 382 if (func) 383 instance_id = func->instance_id; 384 385 spin_unlock_bh(&sdata->u.nan.func_lock); 386 387 if (instance_id) 388 drv_del_nan_func(sdata->local, sdata, instance_id); 389 } 390 391 static int ieee80211_set_noack_map(struct wiphy *wiphy, 392 struct net_device *dev, 393 u16 noack_map) 394 { 395 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 396 397 sdata->noack_map = noack_map; 398 399 ieee80211_check_fast_xmit_iface(sdata); 400 401 return 0; 402 } 403 404 static int ieee80211_set_tx(struct ieee80211_sub_if_data *sdata, 405 const u8 *mac_addr, u8 key_idx) 406 { 407 struct ieee80211_local *local = sdata->local; 408 struct ieee80211_key *key; 409 struct sta_info *sta; 410 int ret = -EINVAL; 411 412 if (!wiphy_ext_feature_isset(local->hw.wiphy, 413 NL80211_EXT_FEATURE_EXT_KEY_ID)) 414 return -EINVAL; 415 416 sta = sta_info_get_bss(sdata, mac_addr); 417 418 if (!sta) 419 return -EINVAL; 420 421 if (sta->ptk_idx == key_idx) 422 return 0; 423 424 mutex_lock(&local->key_mtx); 425 key = key_mtx_dereference(local, sta->ptk[key_idx]); 426 427 if (key && key->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX) 428 ret = ieee80211_set_tx_key(key); 429 430 mutex_unlock(&local->key_mtx); 431 return ret; 432 } 433 434 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, 435 u8 key_idx, bool pairwise, const u8 *mac_addr, 436 struct key_params *params) 437 { 438 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 439 struct ieee80211_local *local = sdata->local; 440 struct sta_info *sta = NULL; 441 struct ieee80211_key *key; 442 int err; 443 444 if (!ieee80211_sdata_running(sdata)) 445 return -ENETDOWN; 446 447 if (pairwise && params->mode == NL80211_KEY_SET_TX) 448 return ieee80211_set_tx(sdata, mac_addr, key_idx); 449 450 /* reject WEP and TKIP keys if WEP failed to initialize */ 451 switch (params->cipher) { 452 case WLAN_CIPHER_SUITE_WEP40: 453 case WLAN_CIPHER_SUITE_TKIP: 454 case WLAN_CIPHER_SUITE_WEP104: 455 if (WARN_ON_ONCE(fips_enabled)) 456 return -EINVAL; 457 break; 458 default: 459 break; 460 } 461 462 key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, 463 params->key, params->seq_len, params->seq); 464 if (IS_ERR(key)) 465 return PTR_ERR(key); 466 467 if (pairwise) 468 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; 469 470 if (params->mode == NL80211_KEY_NO_TX) 471 key->conf.flags |= IEEE80211_KEY_FLAG_NO_AUTO_TX; 472 473 mutex_lock(&local->sta_mtx); 474 475 if (mac_addr) { 476 sta = sta_info_get_bss(sdata, mac_addr); 477 /* 478 * The ASSOC test makes sure the driver is ready to 479 * receive the key. When wpa_supplicant has roamed 480 * using FT, it attempts to set the key before 481 * association has completed, this rejects that attempt 482 * so it will set the key again after association. 483 * 484 * TODO: accept the key if we have a station entry and 485 * add it to the device after the station. 486 */ 487 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { 488 ieee80211_key_free_unused(key); 489 err = -ENOENT; 490 goto out_unlock; 491 } 492 } 493 494 switch (sdata->vif.type) { 495 case NL80211_IFTYPE_STATION: 496 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) 497 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 498 break; 499 case NL80211_IFTYPE_AP: 500 case NL80211_IFTYPE_AP_VLAN: 501 /* Keys without a station are used for TX only */ 502 if (sta && test_sta_flag(sta, WLAN_STA_MFP)) 503 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 504 break; 505 case NL80211_IFTYPE_ADHOC: 506 /* no MFP (yet) */ 507 break; 508 case NL80211_IFTYPE_MESH_POINT: 509 #ifdef CONFIG_MAC80211_MESH 510 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) 511 key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; 512 break; 513 #endif 514 case NL80211_IFTYPE_WDS: 515 case NL80211_IFTYPE_MONITOR: 516 case NL80211_IFTYPE_P2P_DEVICE: 517 case NL80211_IFTYPE_NAN: 518 case NL80211_IFTYPE_UNSPECIFIED: 519 case NUM_NL80211_IFTYPES: 520 case NL80211_IFTYPE_P2P_CLIENT: 521 case NL80211_IFTYPE_P2P_GO: 522 case NL80211_IFTYPE_OCB: 523 /* shouldn't happen */ 524 WARN_ON_ONCE(1); 525 break; 526 } 527 528 err = ieee80211_key_link(key, sdata, sta); 529 530 out_unlock: 531 mutex_unlock(&local->sta_mtx); 532 533 return err; 534 } 535 536 static struct ieee80211_key * 537 ieee80211_lookup_key(struct ieee80211_sub_if_data *sdata, 538 u8 key_idx, bool pairwise, const u8 *mac_addr) 539 { 540 struct ieee80211_local *local = sdata->local; 541 struct sta_info *sta; 542 543 if (mac_addr) { 544 sta = sta_info_get_bss(sdata, mac_addr); 545 if (!sta) 546 return NULL; 547 548 if (pairwise && key_idx < NUM_DEFAULT_KEYS) 549 return rcu_dereference_check_key_mtx(local, 550 sta->ptk[key_idx]); 551 552 if (!pairwise && 553 key_idx < NUM_DEFAULT_KEYS + 554 NUM_DEFAULT_MGMT_KEYS + 555 NUM_DEFAULT_BEACON_KEYS) 556 return rcu_dereference_check_key_mtx(local, 557 sta->deflink.gtk[key_idx]); 558 559 return NULL; 560 } 561 562 if (key_idx < NUM_DEFAULT_KEYS + 563 NUM_DEFAULT_MGMT_KEYS + 564 NUM_DEFAULT_BEACON_KEYS) 565 return rcu_dereference_check_key_mtx(local, 566 sdata->keys[key_idx]); 567 568 return NULL; 569 } 570 571 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, 572 u8 key_idx, bool pairwise, const u8 *mac_addr) 573 { 574 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 575 struct ieee80211_local *local = sdata->local; 576 struct ieee80211_key *key; 577 int ret; 578 579 mutex_lock(&local->sta_mtx); 580 mutex_lock(&local->key_mtx); 581 582 key = ieee80211_lookup_key(sdata, key_idx, pairwise, mac_addr); 583 if (!key) { 584 ret = -ENOENT; 585 goto out_unlock; 586 } 587 588 ieee80211_key_free(key, sdata->vif.type == NL80211_IFTYPE_STATION); 589 590 ret = 0; 591 out_unlock: 592 mutex_unlock(&local->key_mtx); 593 mutex_unlock(&local->sta_mtx); 594 595 return ret; 596 } 597 598 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, 599 u8 key_idx, bool pairwise, const u8 *mac_addr, 600 void *cookie, 601 void (*callback)(void *cookie, 602 struct key_params *params)) 603 { 604 struct ieee80211_sub_if_data *sdata; 605 u8 seq[6] = {0}; 606 struct key_params params; 607 struct ieee80211_key *key; 608 u64 pn64; 609 u32 iv32; 610 u16 iv16; 611 int err = -ENOENT; 612 struct ieee80211_key_seq kseq = {}; 613 614 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 615 616 rcu_read_lock(); 617 618 key = ieee80211_lookup_key(sdata, key_idx, pairwise, mac_addr); 619 if (!key) 620 goto out; 621 622 memset(¶ms, 0, sizeof(params)); 623 624 params.cipher = key->conf.cipher; 625 626 switch (key->conf.cipher) { 627 case WLAN_CIPHER_SUITE_TKIP: 628 pn64 = atomic64_read(&key->conf.tx_pn); 629 iv32 = TKIP_PN_TO_IV32(pn64); 630 iv16 = TKIP_PN_TO_IV16(pn64); 631 632 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 633 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 634 drv_get_key_seq(sdata->local, key, &kseq); 635 iv32 = kseq.tkip.iv32; 636 iv16 = kseq.tkip.iv16; 637 } 638 639 seq[0] = iv16 & 0xff; 640 seq[1] = (iv16 >> 8) & 0xff; 641 seq[2] = iv32 & 0xff; 642 seq[3] = (iv32 >> 8) & 0xff; 643 seq[4] = (iv32 >> 16) & 0xff; 644 seq[5] = (iv32 >> 24) & 0xff; 645 params.seq = seq; 646 params.seq_len = 6; 647 break; 648 case WLAN_CIPHER_SUITE_CCMP: 649 case WLAN_CIPHER_SUITE_CCMP_256: 650 case WLAN_CIPHER_SUITE_AES_CMAC: 651 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 652 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 653 offsetof(typeof(kseq), aes_cmac)); 654 fallthrough; 655 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 656 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 657 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 658 offsetof(typeof(kseq), aes_gmac)); 659 fallthrough; 660 case WLAN_CIPHER_SUITE_GCMP: 661 case WLAN_CIPHER_SUITE_GCMP_256: 662 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) != 663 offsetof(typeof(kseq), gcmp)); 664 665 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE && 666 !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) { 667 drv_get_key_seq(sdata->local, key, &kseq); 668 memcpy(seq, kseq.ccmp.pn, 6); 669 } else { 670 pn64 = atomic64_read(&key->conf.tx_pn); 671 seq[0] = pn64; 672 seq[1] = pn64 >> 8; 673 seq[2] = pn64 >> 16; 674 seq[3] = pn64 >> 24; 675 seq[4] = pn64 >> 32; 676 seq[5] = pn64 >> 40; 677 } 678 params.seq = seq; 679 params.seq_len = 6; 680 break; 681 default: 682 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) 683 break; 684 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) 685 break; 686 drv_get_key_seq(sdata->local, key, &kseq); 687 params.seq = kseq.hw.seq; 688 params.seq_len = kseq.hw.seq_len; 689 break; 690 } 691 692 params.key = key->conf.key; 693 params.key_len = key->conf.keylen; 694 695 callback(cookie, ¶ms); 696 err = 0; 697 698 out: 699 rcu_read_unlock(); 700 return err; 701 } 702 703 static int ieee80211_config_default_key(struct wiphy *wiphy, 704 struct net_device *dev, 705 u8 key_idx, bool uni, 706 bool multi) 707 { 708 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 709 710 ieee80211_set_default_key(sdata, key_idx, uni, multi); 711 712 return 0; 713 } 714 715 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, 716 struct net_device *dev, 717 u8 key_idx) 718 { 719 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 720 721 ieee80211_set_default_mgmt_key(sdata, key_idx); 722 723 return 0; 724 } 725 726 static int ieee80211_config_default_beacon_key(struct wiphy *wiphy, 727 struct net_device *dev, 728 u8 key_idx) 729 { 730 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 731 732 ieee80211_set_default_beacon_key(sdata, key_idx); 733 734 return 0; 735 } 736 737 void sta_set_rate_info_tx(struct sta_info *sta, 738 const struct ieee80211_tx_rate *rate, 739 struct rate_info *rinfo) 740 { 741 rinfo->flags = 0; 742 if (rate->flags & IEEE80211_TX_RC_MCS) { 743 rinfo->flags |= RATE_INFO_FLAGS_MCS; 744 rinfo->mcs = rate->idx; 745 } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { 746 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 747 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); 748 rinfo->nss = ieee80211_rate_get_vht_nss(rate); 749 } else { 750 struct ieee80211_supported_band *sband; 751 int shift = ieee80211_vif_get_shift(&sta->sdata->vif); 752 u16 brate; 753 754 sband = ieee80211_get_sband(sta->sdata); 755 WARN_ON_ONCE(sband && !sband->bitrates); 756 if (sband && sband->bitrates) { 757 brate = sband->bitrates[rate->idx].bitrate; 758 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); 759 } 760 } 761 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) 762 rinfo->bw = RATE_INFO_BW_40; 763 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) 764 rinfo->bw = RATE_INFO_BW_80; 765 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) 766 rinfo->bw = RATE_INFO_BW_160; 767 else 768 rinfo->bw = RATE_INFO_BW_20; 769 if (rate->flags & IEEE80211_TX_RC_SHORT_GI) 770 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 771 } 772 773 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, 774 int idx, u8 *mac, struct station_info *sinfo) 775 { 776 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 777 struct ieee80211_local *local = sdata->local; 778 struct sta_info *sta; 779 int ret = -ENOENT; 780 781 mutex_lock(&local->sta_mtx); 782 783 sta = sta_info_get_by_idx(sdata, idx); 784 if (sta) { 785 ret = 0; 786 memcpy(mac, sta->sta.addr, ETH_ALEN); 787 sta_set_sinfo(sta, sinfo, true); 788 } 789 790 mutex_unlock(&local->sta_mtx); 791 792 return ret; 793 } 794 795 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, 796 int idx, struct survey_info *survey) 797 { 798 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 799 800 return drv_get_survey(local, idx, survey); 801 } 802 803 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, 804 const u8 *mac, struct station_info *sinfo) 805 { 806 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 807 struct ieee80211_local *local = sdata->local; 808 struct sta_info *sta; 809 int ret = -ENOENT; 810 811 mutex_lock(&local->sta_mtx); 812 813 sta = sta_info_get_bss(sdata, mac); 814 if (sta) { 815 ret = 0; 816 sta_set_sinfo(sta, sinfo, true); 817 } 818 819 mutex_unlock(&local->sta_mtx); 820 821 return ret; 822 } 823 824 static int ieee80211_set_monitor_channel(struct wiphy *wiphy, 825 struct cfg80211_chan_def *chandef) 826 { 827 struct ieee80211_local *local = wiphy_priv(wiphy); 828 struct ieee80211_sub_if_data *sdata; 829 int ret = 0; 830 831 if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) 832 return 0; 833 834 mutex_lock(&local->mtx); 835 if (local->use_chanctx) { 836 sdata = wiphy_dereference(local->hw.wiphy, 837 local->monitor_sdata); 838 if (sdata) { 839 ieee80211_vif_release_channel(sdata); 840 ret = ieee80211_vif_use_channel(sdata, chandef, 841 IEEE80211_CHANCTX_EXCLUSIVE); 842 } 843 } else if (local->open_count == local->monitors) { 844 local->_oper_chandef = *chandef; 845 ieee80211_hw_config(local, 0); 846 } 847 848 if (ret == 0) 849 local->monitor_chandef = *chandef; 850 mutex_unlock(&local->mtx); 851 852 return ret; 853 } 854 855 static int 856 ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, 857 const u8 *resp, size_t resp_len, 858 const struct ieee80211_csa_settings *csa, 859 const struct ieee80211_color_change_settings *cca) 860 { 861 struct probe_resp *new, *old; 862 863 if (!resp || !resp_len) 864 return 1; 865 866 old = sdata_dereference(sdata->u.ap.probe_resp, sdata); 867 868 new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); 869 if (!new) 870 return -ENOMEM; 871 872 new->len = resp_len; 873 memcpy(new->data, resp, resp_len); 874 875 if (csa) 876 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_presp, 877 csa->n_counter_offsets_presp * 878 sizeof(new->cntdwn_counter_offsets[0])); 879 else if (cca) 880 new->cntdwn_counter_offsets[0] = cca->counter_offset_presp; 881 882 rcu_assign_pointer(sdata->u.ap.probe_resp, new); 883 if (old) 884 kfree_rcu(old, rcu_head); 885 886 return 0; 887 } 888 889 static int ieee80211_set_fils_discovery(struct ieee80211_sub_if_data *sdata, 890 struct cfg80211_fils_discovery *params) 891 { 892 struct fils_discovery_data *new, *old = NULL; 893 struct ieee80211_fils_discovery *fd; 894 895 if (!params->tmpl || !params->tmpl_len) 896 return -EINVAL; 897 898 fd = &sdata->vif.bss_conf.fils_discovery; 899 fd->min_interval = params->min_interval; 900 fd->max_interval = params->max_interval; 901 902 old = sdata_dereference(sdata->u.ap.fils_discovery, sdata); 903 new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL); 904 if (!new) 905 return -ENOMEM; 906 new->len = params->tmpl_len; 907 memcpy(new->data, params->tmpl, params->tmpl_len); 908 rcu_assign_pointer(sdata->u.ap.fils_discovery, new); 909 910 if (old) 911 kfree_rcu(old, rcu_head); 912 913 return 0; 914 } 915 916 static int 917 ieee80211_set_unsol_bcast_probe_resp(struct ieee80211_sub_if_data *sdata, 918 struct cfg80211_unsol_bcast_probe_resp *params) 919 { 920 struct unsol_bcast_probe_resp_data *new, *old = NULL; 921 922 if (!params->tmpl || !params->tmpl_len) 923 return -EINVAL; 924 925 old = sdata_dereference(sdata->u.ap.unsol_bcast_probe_resp, sdata); 926 new = kzalloc(sizeof(*new) + params->tmpl_len, GFP_KERNEL); 927 if (!new) 928 return -ENOMEM; 929 new->len = params->tmpl_len; 930 memcpy(new->data, params->tmpl, params->tmpl_len); 931 rcu_assign_pointer(sdata->u.ap.unsol_bcast_probe_resp, new); 932 933 if (old) 934 kfree_rcu(old, rcu_head); 935 936 sdata->vif.bss_conf.unsol_bcast_probe_resp_interval = 937 params->interval; 938 939 return 0; 940 } 941 942 static int ieee80211_set_ftm_responder_params( 943 struct ieee80211_sub_if_data *sdata, 944 const u8 *lci, size_t lci_len, 945 const u8 *civicloc, size_t civicloc_len) 946 { 947 struct ieee80211_ftm_responder_params *new, *old; 948 struct ieee80211_bss_conf *bss_conf; 949 u8 *pos; 950 int len; 951 952 if (!lci_len && !civicloc_len) 953 return 0; 954 955 bss_conf = &sdata->vif.bss_conf; 956 old = bss_conf->ftmr_params; 957 len = lci_len + civicloc_len; 958 959 new = kzalloc(sizeof(*new) + len, GFP_KERNEL); 960 if (!new) 961 return -ENOMEM; 962 963 pos = (u8 *)(new + 1); 964 if (lci_len) { 965 new->lci_len = lci_len; 966 new->lci = pos; 967 memcpy(pos, lci, lci_len); 968 pos += lci_len; 969 } 970 971 if (civicloc_len) { 972 new->civicloc_len = civicloc_len; 973 new->civicloc = pos; 974 memcpy(pos, civicloc, civicloc_len); 975 pos += civicloc_len; 976 } 977 978 bss_conf->ftmr_params = new; 979 kfree(old); 980 981 return 0; 982 } 983 984 static int 985 ieee80211_copy_mbssid_beacon(u8 *pos, struct cfg80211_mbssid_elems *dst, 986 struct cfg80211_mbssid_elems *src) 987 { 988 int i, offset = 0; 989 990 for (i = 0; i < src->cnt; i++) { 991 memcpy(pos + offset, src->elem[i].data, src->elem[i].len); 992 dst->elem[i].len = src->elem[i].len; 993 dst->elem[i].data = pos + offset; 994 offset += dst->elem[i].len; 995 } 996 dst->cnt = src->cnt; 997 998 return offset; 999 } 1000 1001 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, 1002 struct cfg80211_beacon_data *params, 1003 const struct ieee80211_csa_settings *csa, 1004 const struct ieee80211_color_change_settings *cca) 1005 { 1006 struct cfg80211_mbssid_elems *mbssid = NULL; 1007 struct beacon_data *new, *old; 1008 int new_head_len, new_tail_len; 1009 int size, err; 1010 u32 changed = BSS_CHANGED_BEACON; 1011 1012 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1013 1014 1015 /* Need to have a beacon head if we don't have one yet */ 1016 if (!params->head && !old) 1017 return -EINVAL; 1018 1019 /* new or old head? */ 1020 if (params->head) 1021 new_head_len = params->head_len; 1022 else 1023 new_head_len = old->head_len; 1024 1025 /* new or old tail? */ 1026 if (params->tail || !old) 1027 /* params->tail_len will be zero for !params->tail */ 1028 new_tail_len = params->tail_len; 1029 else 1030 new_tail_len = old->tail_len; 1031 1032 size = sizeof(*new) + new_head_len + new_tail_len; 1033 1034 /* new or old multiple BSSID elements? */ 1035 if (params->mbssid_ies) { 1036 mbssid = params->mbssid_ies; 1037 size += struct_size(new->mbssid_ies, elem, mbssid->cnt); 1038 size += ieee80211_get_mbssid_beacon_len(mbssid); 1039 } else if (old && old->mbssid_ies) { 1040 mbssid = old->mbssid_ies; 1041 size += struct_size(new->mbssid_ies, elem, mbssid->cnt); 1042 size += ieee80211_get_mbssid_beacon_len(mbssid); 1043 } 1044 1045 new = kzalloc(size, GFP_KERNEL); 1046 if (!new) 1047 return -ENOMEM; 1048 1049 /* start filling the new info now */ 1050 1051 /* 1052 * pointers go into the block we allocated, 1053 * memory is | beacon_data | head | tail | mbssid_ies 1054 */ 1055 new->head = ((u8 *) new) + sizeof(*new); 1056 new->tail = new->head + new_head_len; 1057 new->head_len = new_head_len; 1058 new->tail_len = new_tail_len; 1059 /* copy in optional mbssid_ies */ 1060 if (mbssid) { 1061 u8 *pos = new->tail + new->tail_len; 1062 1063 new->mbssid_ies = (void *)pos; 1064 pos += struct_size(new->mbssid_ies, elem, mbssid->cnt); 1065 ieee80211_copy_mbssid_beacon(pos, new->mbssid_ies, mbssid); 1066 /* update bssid_indicator */ 1067 sdata->vif.bss_conf.bssid_indicator = 1068 ilog2(__roundup_pow_of_two(mbssid->cnt + 1)); 1069 } 1070 1071 if (csa) { 1072 new->cntdwn_current_counter = csa->count; 1073 memcpy(new->cntdwn_counter_offsets, csa->counter_offsets_beacon, 1074 csa->n_counter_offsets_beacon * 1075 sizeof(new->cntdwn_counter_offsets[0])); 1076 } else if (cca) { 1077 new->cntdwn_current_counter = cca->count; 1078 new->cntdwn_counter_offsets[0] = cca->counter_offset_beacon; 1079 } 1080 1081 /* copy in head */ 1082 if (params->head) 1083 memcpy(new->head, params->head, new_head_len); 1084 else 1085 memcpy(new->head, old->head, new_head_len); 1086 1087 /* copy in optional tail */ 1088 if (params->tail) 1089 memcpy(new->tail, params->tail, new_tail_len); 1090 else 1091 if (old) 1092 memcpy(new->tail, old->tail, new_tail_len); 1093 1094 err = ieee80211_set_probe_resp(sdata, params->probe_resp, 1095 params->probe_resp_len, csa, cca); 1096 if (err < 0) { 1097 kfree(new); 1098 return err; 1099 } 1100 if (err == 0) 1101 changed |= BSS_CHANGED_AP_PROBE_RESP; 1102 1103 if (params->ftm_responder != -1) { 1104 sdata->vif.bss_conf.ftm_responder = params->ftm_responder; 1105 err = ieee80211_set_ftm_responder_params(sdata, 1106 params->lci, 1107 params->lci_len, 1108 params->civicloc, 1109 params->civicloc_len); 1110 1111 if (err < 0) { 1112 kfree(new); 1113 return err; 1114 } 1115 1116 changed |= BSS_CHANGED_FTM_RESPONDER; 1117 } 1118 1119 rcu_assign_pointer(sdata->u.ap.beacon, new); 1120 1121 if (old) 1122 kfree_rcu(old, rcu_head); 1123 1124 return changed; 1125 } 1126 1127 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, 1128 struct cfg80211_ap_settings *params) 1129 { 1130 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1131 struct ieee80211_local *local = sdata->local; 1132 struct beacon_data *old; 1133 struct ieee80211_sub_if_data *vlan; 1134 u32 changed = BSS_CHANGED_BEACON_INT | 1135 BSS_CHANGED_BEACON_ENABLED | 1136 BSS_CHANGED_BEACON | 1137 BSS_CHANGED_SSID | 1138 BSS_CHANGED_P2P_PS | 1139 BSS_CHANGED_TXPOWER | 1140 BSS_CHANGED_TWT; 1141 int i, err; 1142 int prev_beacon_int; 1143 1144 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1145 if (old) 1146 return -EALREADY; 1147 1148 if (params->smps_mode != NL80211_SMPS_OFF) 1149 return -ENOTSUPP; 1150 1151 sdata->smps_mode = IEEE80211_SMPS_OFF; 1152 1153 sdata->needed_rx_chains = sdata->local->rx_chains; 1154 1155 prev_beacon_int = sdata->vif.bss_conf.beacon_int; 1156 sdata->vif.bss_conf.beacon_int = params->beacon_interval; 1157 1158 if (params->he_cap && params->he_oper) { 1159 sdata->vif.bss_conf.he_support = true; 1160 sdata->vif.bss_conf.htc_trig_based_pkt_ext = 1161 le32_get_bits(params->he_oper->he_oper_params, 1162 IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK); 1163 sdata->vif.bss_conf.frame_time_rts_th = 1164 le32_get_bits(params->he_oper->he_oper_params, 1165 IEEE80211_HE_OPERATION_RTS_THRESHOLD_MASK); 1166 changed |= BSS_CHANGED_HE_OBSS_PD; 1167 1168 if (params->beacon.he_bss_color.enabled) 1169 changed |= BSS_CHANGED_HE_BSS_COLOR; 1170 } 1171 1172 if (sdata->vif.type == NL80211_IFTYPE_AP && 1173 params->mbssid_config.tx_wdev) { 1174 err = ieee80211_set_ap_mbssid_options(sdata, 1175 params->mbssid_config); 1176 if (err) 1177 return err; 1178 } 1179 1180 mutex_lock(&local->mtx); 1181 err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, 1182 IEEE80211_CHANCTX_SHARED); 1183 if (!err) 1184 ieee80211_vif_copy_chanctx_to_vlans(sdata, false); 1185 mutex_unlock(&local->mtx); 1186 if (err) { 1187 sdata->vif.bss_conf.beacon_int = prev_beacon_int; 1188 return err; 1189 } 1190 1191 /* 1192 * Apply control port protocol, this allows us to 1193 * not encrypt dynamic WEP control frames. 1194 */ 1195 sdata->control_port_protocol = params->crypto.control_port_ethertype; 1196 sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; 1197 sdata->control_port_over_nl80211 = 1198 params->crypto.control_port_over_nl80211; 1199 sdata->control_port_no_preauth = 1200 params->crypto.control_port_no_preauth; 1201 1202 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { 1203 vlan->control_port_protocol = 1204 params->crypto.control_port_ethertype; 1205 vlan->control_port_no_encrypt = 1206 params->crypto.control_port_no_encrypt; 1207 vlan->control_port_over_nl80211 = 1208 params->crypto.control_port_over_nl80211; 1209 vlan->control_port_no_preauth = 1210 params->crypto.control_port_no_preauth; 1211 } 1212 1213 sdata->vif.bss_conf.dtim_period = params->dtim_period; 1214 sdata->vif.bss_conf.enable_beacon = true; 1215 sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p; 1216 sdata->vif.bss_conf.twt_responder = params->twt_responder; 1217 sdata->vif.bss_conf.he_obss_pd = params->he_obss_pd; 1218 sdata->vif.bss_conf.he_bss_color = params->beacon.he_bss_color; 1219 sdata->vif.cfg.s1g = params->chandef.chan->band == 1220 NL80211_BAND_S1GHZ; 1221 1222 sdata->vif.cfg.ssid_len = params->ssid_len; 1223 if (params->ssid_len) 1224 memcpy(sdata->vif.cfg.ssid, params->ssid, 1225 params->ssid_len); 1226 sdata->vif.bss_conf.hidden_ssid = 1227 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); 1228 1229 memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, 1230 sizeof(sdata->vif.bss_conf.p2p_noa_attr)); 1231 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = 1232 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 1233 if (params->p2p_opp_ps) 1234 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 1235 IEEE80211_P2P_OPPPS_ENABLE_BIT; 1236 1237 sdata->beacon_rate_set = false; 1238 if (wiphy_ext_feature_isset(local->hw.wiphy, 1239 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) { 1240 for (i = 0; i < NUM_NL80211_BANDS; i++) { 1241 sdata->beacon_rateidx_mask[i] = 1242 params->beacon_rate.control[i].legacy; 1243 if (sdata->beacon_rateidx_mask[i]) 1244 sdata->beacon_rate_set = true; 1245 } 1246 } 1247 1248 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) 1249 sdata->vif.bss_conf.beacon_tx_rate = params->beacon_rate; 1250 1251 err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL, NULL); 1252 if (err < 0) 1253 goto error; 1254 changed |= err; 1255 1256 if (params->fils_discovery.max_interval) { 1257 err = ieee80211_set_fils_discovery(sdata, 1258 ¶ms->fils_discovery); 1259 if (err < 0) 1260 goto error; 1261 changed |= BSS_CHANGED_FILS_DISCOVERY; 1262 } 1263 1264 if (params->unsol_bcast_probe_resp.interval) { 1265 err = ieee80211_set_unsol_bcast_probe_resp(sdata, 1266 ¶ms->unsol_bcast_probe_resp); 1267 if (err < 0) 1268 goto error; 1269 changed |= BSS_CHANGED_UNSOL_BCAST_PROBE_RESP; 1270 } 1271 1272 err = drv_start_ap(sdata->local, sdata); 1273 if (err) { 1274 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1275 1276 if (old) 1277 kfree_rcu(old, rcu_head); 1278 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1279 goto error; 1280 } 1281 1282 ieee80211_recalc_dtim(local, sdata); 1283 ieee80211_bss_info_change_notify(sdata, changed); 1284 1285 netif_carrier_on(dev); 1286 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1287 netif_carrier_on(vlan->dev); 1288 1289 return 0; 1290 1291 error: 1292 mutex_lock(&local->mtx); 1293 ieee80211_vif_release_channel(sdata); 1294 mutex_unlock(&local->mtx); 1295 1296 return err; 1297 } 1298 1299 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, 1300 struct cfg80211_beacon_data *params) 1301 { 1302 struct ieee80211_sub_if_data *sdata; 1303 struct ieee80211_bss_conf *bss_conf; 1304 struct beacon_data *old; 1305 int err; 1306 1307 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1308 sdata_assert_lock(sdata); 1309 1310 /* don't allow changing the beacon while a countdown is in place - offset 1311 * of channel switch counter may change 1312 */ 1313 if (sdata->vif.bss_conf.csa_active || sdata->vif.bss_conf.color_change_active) 1314 return -EBUSY; 1315 1316 old = sdata_dereference(sdata->u.ap.beacon, sdata); 1317 if (!old) 1318 return -ENOENT; 1319 1320 err = ieee80211_assign_beacon(sdata, params, NULL, NULL); 1321 if (err < 0) 1322 return err; 1323 1324 bss_conf = &sdata->vif.bss_conf; 1325 if (params->he_bss_color_valid && 1326 params->he_bss_color.enabled != bss_conf->he_bss_color.enabled) { 1327 bss_conf->he_bss_color.enabled = params->he_bss_color.enabled; 1328 err |= BSS_CHANGED_HE_BSS_COLOR; 1329 } 1330 1331 ieee80211_bss_info_change_notify(sdata, err); 1332 return 0; 1333 } 1334 1335 static void ieee80211_free_next_beacon(struct ieee80211_sub_if_data *sdata) 1336 { 1337 if (!sdata->u.ap.next_beacon) 1338 return; 1339 1340 kfree(sdata->u.ap.next_beacon->mbssid_ies); 1341 kfree(sdata->u.ap.next_beacon); 1342 sdata->u.ap.next_beacon = NULL; 1343 } 1344 1345 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev, 1346 unsigned int link_id) 1347 { 1348 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1349 struct ieee80211_sub_if_data *vlan; 1350 struct ieee80211_local *local = sdata->local; 1351 struct beacon_data *old_beacon; 1352 struct probe_resp *old_probe_resp; 1353 struct fils_discovery_data *old_fils_discovery; 1354 struct unsol_bcast_probe_resp_data *old_unsol_bcast_probe_resp; 1355 struct cfg80211_chan_def chandef; 1356 1357 sdata_assert_lock(sdata); 1358 1359 old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); 1360 if (!old_beacon) 1361 return -ENOENT; 1362 old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); 1363 old_fils_discovery = sdata_dereference(sdata->u.ap.fils_discovery, 1364 sdata); 1365 old_unsol_bcast_probe_resp = 1366 sdata_dereference(sdata->u.ap.unsol_bcast_probe_resp, 1367 sdata); 1368 1369 /* abort any running channel switch */ 1370 mutex_lock(&local->mtx); 1371 sdata->vif.bss_conf.csa_active = false; 1372 if (sdata->csa_block_tx) { 1373 ieee80211_wake_vif_queues(local, sdata, 1374 IEEE80211_QUEUE_STOP_REASON_CSA); 1375 sdata->csa_block_tx = false; 1376 } 1377 1378 mutex_unlock(&local->mtx); 1379 1380 ieee80211_free_next_beacon(sdata); 1381 1382 /* turn off carrier for this interface and dependent VLANs */ 1383 list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) 1384 netif_carrier_off(vlan->dev); 1385 netif_carrier_off(dev); 1386 1387 /* remove beacon and probe response */ 1388 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); 1389 RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); 1390 RCU_INIT_POINTER(sdata->u.ap.fils_discovery, NULL); 1391 RCU_INIT_POINTER(sdata->u.ap.unsol_bcast_probe_resp, NULL); 1392 kfree_rcu(old_beacon, rcu_head); 1393 if (old_probe_resp) 1394 kfree_rcu(old_probe_resp, rcu_head); 1395 if (old_fils_discovery) 1396 kfree_rcu(old_fils_discovery, rcu_head); 1397 if (old_unsol_bcast_probe_resp) 1398 kfree_rcu(old_unsol_bcast_probe_resp, rcu_head); 1399 1400 kfree(sdata->vif.bss_conf.ftmr_params); 1401 sdata->vif.bss_conf.ftmr_params = NULL; 1402 1403 __sta_info_flush(sdata, true); 1404 ieee80211_free_keys(sdata, true); 1405 1406 sdata->vif.bss_conf.enable_beacon = false; 1407 sdata->beacon_rate_set = false; 1408 sdata->vif.cfg.ssid_len = 0; 1409 clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); 1410 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); 1411 1412 if (sdata->wdev.cac_started) { 1413 chandef = sdata->vif.bss_conf.chandef; 1414 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); 1415 cfg80211_cac_event(sdata->dev, &chandef, 1416 NL80211_RADAR_CAC_ABORTED, 1417 GFP_KERNEL); 1418 } 1419 1420 drv_stop_ap(sdata->local, sdata); 1421 1422 /* free all potentially still buffered bcast frames */ 1423 local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); 1424 ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf); 1425 1426 mutex_lock(&local->mtx); 1427 ieee80211_vif_copy_chanctx_to_vlans(sdata, true); 1428 ieee80211_vif_release_channel(sdata); 1429 mutex_unlock(&local->mtx); 1430 1431 return 0; 1432 } 1433 1434 static int sta_apply_auth_flags(struct ieee80211_local *local, 1435 struct sta_info *sta, 1436 u32 mask, u32 set) 1437 { 1438 int ret; 1439 1440 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1441 set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1442 !test_sta_flag(sta, WLAN_STA_AUTH)) { 1443 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1444 if (ret) 1445 return ret; 1446 } 1447 1448 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1449 set & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1450 !test_sta_flag(sta, WLAN_STA_ASSOC)) { 1451 /* 1452 * When peer becomes associated, init rate control as 1453 * well. Some drivers require rate control initialized 1454 * before drv_sta_state() is called. 1455 */ 1456 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL)) 1457 rate_control_rate_init(sta); 1458 1459 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1460 if (ret) 1461 return ret; 1462 } 1463 1464 if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1465 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) 1466 ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); 1467 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1468 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); 1469 else 1470 ret = 0; 1471 if (ret) 1472 return ret; 1473 } 1474 1475 if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && 1476 !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1477 test_sta_flag(sta, WLAN_STA_ASSOC)) { 1478 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); 1479 if (ret) 1480 return ret; 1481 } 1482 1483 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && 1484 !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && 1485 test_sta_flag(sta, WLAN_STA_AUTH)) { 1486 ret = sta_info_move_state(sta, IEEE80211_STA_NONE); 1487 if (ret) 1488 return ret; 1489 } 1490 1491 return 0; 1492 } 1493 1494 static void sta_apply_mesh_params(struct ieee80211_local *local, 1495 struct sta_info *sta, 1496 struct station_parameters *params) 1497 { 1498 #ifdef CONFIG_MAC80211_MESH 1499 struct ieee80211_sub_if_data *sdata = sta->sdata; 1500 u32 changed = 0; 1501 1502 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { 1503 switch (params->plink_state) { 1504 case NL80211_PLINK_ESTAB: 1505 if (sta->mesh->plink_state != NL80211_PLINK_ESTAB) 1506 changed = mesh_plink_inc_estab_count(sdata); 1507 sta->mesh->plink_state = params->plink_state; 1508 sta->mesh->aid = params->peer_aid; 1509 1510 ieee80211_mps_sta_status_update(sta); 1511 changed |= ieee80211_mps_set_sta_local_pm(sta, 1512 sdata->u.mesh.mshcfg.power_mode); 1513 1514 ewma_mesh_tx_rate_avg_init(&sta->mesh->tx_rate_avg); 1515 /* init at low value */ 1516 ewma_mesh_tx_rate_avg_add(&sta->mesh->tx_rate_avg, 10); 1517 1518 break; 1519 case NL80211_PLINK_LISTEN: 1520 case NL80211_PLINK_BLOCKED: 1521 case NL80211_PLINK_OPN_SNT: 1522 case NL80211_PLINK_OPN_RCVD: 1523 case NL80211_PLINK_CNF_RCVD: 1524 case NL80211_PLINK_HOLDING: 1525 if (sta->mesh->plink_state == NL80211_PLINK_ESTAB) 1526 changed = mesh_plink_dec_estab_count(sdata); 1527 sta->mesh->plink_state = params->plink_state; 1528 1529 ieee80211_mps_sta_status_update(sta); 1530 changed |= ieee80211_mps_set_sta_local_pm(sta, 1531 NL80211_MESH_POWER_UNKNOWN); 1532 break; 1533 default: 1534 /* nothing */ 1535 break; 1536 } 1537 } 1538 1539 switch (params->plink_action) { 1540 case NL80211_PLINK_ACTION_NO_ACTION: 1541 /* nothing */ 1542 break; 1543 case NL80211_PLINK_ACTION_OPEN: 1544 changed |= mesh_plink_open(sta); 1545 break; 1546 case NL80211_PLINK_ACTION_BLOCK: 1547 changed |= mesh_plink_block(sta); 1548 break; 1549 } 1550 1551 if (params->local_pm) 1552 changed |= ieee80211_mps_set_sta_local_pm(sta, 1553 params->local_pm); 1554 1555 ieee80211_mbss_info_change_notify(sdata, changed); 1556 #endif 1557 } 1558 1559 static void sta_apply_airtime_params(struct ieee80211_local *local, 1560 struct sta_info *sta, 1561 struct station_parameters *params) 1562 { 1563 u8 ac; 1564 1565 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 1566 struct airtime_sched_info *air_sched = &local->airtime[ac]; 1567 struct airtime_info *air_info = &sta->airtime[ac]; 1568 struct txq_info *txqi; 1569 u8 tid; 1570 1571 spin_lock_bh(&air_sched->lock); 1572 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 1573 if (air_info->weight == params->airtime_weight || 1574 !sta->sta.txq[tid] || 1575 ac != ieee80211_ac_from_tid(tid)) 1576 continue; 1577 1578 airtime_weight_set(air_info, params->airtime_weight); 1579 1580 txqi = to_txq_info(sta->sta.txq[tid]); 1581 if (RB_EMPTY_NODE(&txqi->schedule_order)) 1582 continue; 1583 1584 ieee80211_update_airtime_weight(local, air_sched, 1585 0, true); 1586 } 1587 spin_unlock_bh(&air_sched->lock); 1588 } 1589 } 1590 1591 static int sta_apply_parameters(struct ieee80211_local *local, 1592 struct sta_info *sta, 1593 struct station_parameters *params) 1594 { 1595 int ret = 0; 1596 struct ieee80211_supported_band *sband; 1597 struct ieee80211_sub_if_data *sdata = sta->sdata; 1598 u32 mask, set; 1599 1600 sband = ieee80211_get_sband(sdata); 1601 if (!sband) 1602 return -EINVAL; 1603 1604 mask = params->sta_flags_mask; 1605 set = params->sta_flags_set; 1606 1607 if (ieee80211_vif_is_mesh(&sdata->vif)) { 1608 /* 1609 * In mesh mode, ASSOCIATED isn't part of the nl80211 1610 * API but must follow AUTHENTICATED for driver state. 1611 */ 1612 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1613 mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1614 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) 1615 set |= BIT(NL80211_STA_FLAG_ASSOCIATED); 1616 } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1617 /* 1618 * TDLS -- everything follows authorized, but 1619 * only becoming authorized is possible, not 1620 * going back 1621 */ 1622 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1623 set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1624 BIT(NL80211_STA_FLAG_ASSOCIATED); 1625 mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | 1626 BIT(NL80211_STA_FLAG_ASSOCIATED); 1627 } 1628 } 1629 1630 if (mask & BIT(NL80211_STA_FLAG_WME) && 1631 local->hw.queues >= IEEE80211_NUM_ACS) 1632 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); 1633 1634 /* auth flags will be set later for TDLS, 1635 * and for unassociated stations that move to associated */ 1636 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1637 !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) && 1638 (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) { 1639 ret = sta_apply_auth_flags(local, sta, mask, set); 1640 if (ret) 1641 return ret; 1642 } 1643 1644 if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { 1645 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) 1646 set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1647 else 1648 clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); 1649 } 1650 1651 if (mask & BIT(NL80211_STA_FLAG_MFP)) { 1652 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP)); 1653 if (set & BIT(NL80211_STA_FLAG_MFP)) 1654 set_sta_flag(sta, WLAN_STA_MFP); 1655 else 1656 clear_sta_flag(sta, WLAN_STA_MFP); 1657 } 1658 1659 if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { 1660 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1661 set_sta_flag(sta, WLAN_STA_TDLS_PEER); 1662 else 1663 clear_sta_flag(sta, WLAN_STA_TDLS_PEER); 1664 } 1665 1666 /* mark TDLS channel switch support, if the AP allows it */ 1667 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1668 !sdata->u.mgd.tdls_chan_switch_prohibited && 1669 params->ext_capab_len >= 4 && 1670 params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) 1671 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); 1672 1673 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1674 !sdata->u.mgd.tdls_wider_bw_prohibited && 1675 ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) && 1676 params->ext_capab_len >= 8 && 1677 params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) 1678 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW); 1679 1680 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { 1681 sta->sta.uapsd_queues = params->uapsd_queues; 1682 sta->sta.max_sp = params->max_sp; 1683 } 1684 1685 /* The sender might not have sent the last bit, consider it to be 0 */ 1686 if (params->ext_capab_len >= 8) { 1687 u8 val = (params->ext_capab[7] & 1688 WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7; 1689 1690 /* we did get all the bits, take the MSB as well */ 1691 if (params->ext_capab_len >= 9) { 1692 u8 val_msb = params->ext_capab[8] & 1693 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB; 1694 val_msb <<= 1; 1695 val |= val_msb; 1696 } 1697 1698 switch (val) { 1699 case 1: 1700 sta->sta.max_amsdu_subframes = 32; 1701 break; 1702 case 2: 1703 sta->sta.max_amsdu_subframes = 16; 1704 break; 1705 case 3: 1706 sta->sta.max_amsdu_subframes = 8; 1707 break; 1708 default: 1709 sta->sta.max_amsdu_subframes = 0; 1710 } 1711 } 1712 1713 /* 1714 * cfg80211 validates this (1-2007) and allows setting the AID 1715 * only when creating a new station entry 1716 */ 1717 if (params->aid) 1718 sta->sta.aid = params->aid; 1719 1720 /* 1721 * Some of the following updates would be racy if called on an 1722 * existing station, via ieee80211_change_station(). However, 1723 * all such changes are rejected by cfg80211 except for updates 1724 * changing the supported rates on an existing but not yet used 1725 * TDLS peer. 1726 */ 1727 1728 if (params->listen_interval >= 0) 1729 sta->listen_interval = params->listen_interval; 1730 1731 if (params->sta_modify_mask & STATION_PARAM_APPLY_STA_TXPOWER) { 1732 sta->sta.deflink.txpwr.type = params->txpwr.type; 1733 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) 1734 sta->sta.deflink.txpwr.power = params->txpwr.power; 1735 ret = drv_sta_set_txpwr(local, sdata, sta); 1736 if (ret) 1737 return ret; 1738 } 1739 1740 if (params->supported_rates && params->supported_rates_len) { 1741 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 1742 sband, params->supported_rates, 1743 params->supported_rates_len, 1744 &sta->sta.deflink.supp_rates[sband->band]); 1745 } 1746 1747 if (params->ht_capa) 1748 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, 1749 params->ht_capa, sta); 1750 1751 /* VHT can override some HT caps such as the A-MSDU max length */ 1752 if (params->vht_capa) 1753 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, 1754 params->vht_capa, sta); 1755 1756 if (params->he_capa) 1757 ieee80211_he_cap_ie_to_sta_he_cap(sdata, sband, 1758 (void *)params->he_capa, 1759 params->he_capa_len, 1760 (void *)params->he_6ghz_capa, 1761 sta); 1762 1763 if (params->eht_capa) 1764 ieee80211_eht_cap_ie_to_sta_eht_cap(sdata, sband, 1765 (u8 *)params->he_capa, 1766 params->he_capa_len, 1767 params->eht_capa, 1768 params->eht_capa_len, 1769 sta); 1770 1771 if (params->opmode_notif_used) { 1772 /* returned value is only needed for rc update, but the 1773 * rc isn't initialized here yet, so ignore it 1774 */ 1775 __ieee80211_vht_handle_opmode(sdata, sta, params->opmode_notif, 1776 sband->band); 1777 } 1778 1779 if (params->support_p2p_ps >= 0) 1780 sta->sta.support_p2p_ps = params->support_p2p_ps; 1781 1782 if (ieee80211_vif_is_mesh(&sdata->vif)) 1783 sta_apply_mesh_params(local, sta, params); 1784 1785 if (params->airtime_weight) 1786 sta_apply_airtime_params(local, sta, params); 1787 1788 1789 /* set the STA state after all sta info from usermode has been set */ 1790 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) || 1791 set & BIT(NL80211_STA_FLAG_ASSOCIATED)) { 1792 ret = sta_apply_auth_flags(local, sta, mask, set); 1793 if (ret) 1794 return ret; 1795 } 1796 1797 return 0; 1798 } 1799 1800 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, 1801 const u8 *mac, 1802 struct station_parameters *params) 1803 { 1804 struct ieee80211_local *local = wiphy_priv(wiphy); 1805 struct sta_info *sta; 1806 struct ieee80211_sub_if_data *sdata; 1807 int err; 1808 1809 if (params->vlan) { 1810 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1811 1812 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && 1813 sdata->vif.type != NL80211_IFTYPE_AP) 1814 return -EINVAL; 1815 } else 1816 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1817 1818 if (ether_addr_equal(mac, sdata->vif.addr)) 1819 return -EINVAL; 1820 1821 if (!is_valid_ether_addr(mac)) 1822 return -EINVAL; 1823 1824 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER) && 1825 sdata->vif.type == NL80211_IFTYPE_STATION && 1826 !sdata->u.mgd.associated) 1827 return -EINVAL; 1828 1829 sta = sta_info_alloc(sdata, mac, GFP_KERNEL); 1830 if (!sta) 1831 return -ENOMEM; 1832 1833 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 1834 sta->sta.tdls = true; 1835 1836 err = sta_apply_parameters(local, sta, params); 1837 if (err) { 1838 sta_info_free(local, sta); 1839 return err; 1840 } 1841 1842 /* 1843 * for TDLS and for unassociated station, rate control should be 1844 * initialized only when rates are known and station is marked 1845 * authorized/associated 1846 */ 1847 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) && 1848 test_sta_flag(sta, WLAN_STA_ASSOC)) 1849 rate_control_rate_init(sta); 1850 1851 return sta_info_insert(sta); 1852 } 1853 1854 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, 1855 struct station_del_parameters *params) 1856 { 1857 struct ieee80211_sub_if_data *sdata; 1858 1859 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1860 1861 if (params->mac) 1862 return sta_info_destroy_addr_bss(sdata, params->mac); 1863 1864 sta_info_flush(sdata); 1865 return 0; 1866 } 1867 1868 static int ieee80211_change_station(struct wiphy *wiphy, 1869 struct net_device *dev, const u8 *mac, 1870 struct station_parameters *params) 1871 { 1872 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1873 struct ieee80211_local *local = wiphy_priv(wiphy); 1874 struct sta_info *sta; 1875 struct ieee80211_sub_if_data *vlansdata; 1876 enum cfg80211_station_type statype; 1877 int err; 1878 1879 mutex_lock(&local->sta_mtx); 1880 1881 sta = sta_info_get_bss(sdata, mac); 1882 if (!sta) { 1883 err = -ENOENT; 1884 goto out_err; 1885 } 1886 1887 switch (sdata->vif.type) { 1888 case NL80211_IFTYPE_MESH_POINT: 1889 if (sdata->u.mesh.user_mpm) 1890 statype = CFG80211_STA_MESH_PEER_USER; 1891 else 1892 statype = CFG80211_STA_MESH_PEER_KERNEL; 1893 break; 1894 case NL80211_IFTYPE_ADHOC: 1895 statype = CFG80211_STA_IBSS; 1896 break; 1897 case NL80211_IFTYPE_STATION: 1898 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { 1899 statype = CFG80211_STA_AP_STA; 1900 break; 1901 } 1902 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1903 statype = CFG80211_STA_TDLS_PEER_ACTIVE; 1904 else 1905 statype = CFG80211_STA_TDLS_PEER_SETUP; 1906 break; 1907 case NL80211_IFTYPE_AP: 1908 case NL80211_IFTYPE_AP_VLAN: 1909 if (test_sta_flag(sta, WLAN_STA_ASSOC)) 1910 statype = CFG80211_STA_AP_CLIENT; 1911 else 1912 statype = CFG80211_STA_AP_CLIENT_UNASSOC; 1913 break; 1914 default: 1915 err = -EOPNOTSUPP; 1916 goto out_err; 1917 } 1918 1919 err = cfg80211_check_station_change(wiphy, params, statype); 1920 if (err) 1921 goto out_err; 1922 1923 if (params->vlan && params->vlan != sta->sdata->dev) { 1924 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); 1925 1926 if (params->vlan->ieee80211_ptr->use_4addr) { 1927 if (vlansdata->u.vlan.sta) { 1928 err = -EBUSY; 1929 goto out_err; 1930 } 1931 1932 rcu_assign_pointer(vlansdata->u.vlan.sta, sta); 1933 __ieee80211_check_fast_rx_iface(vlansdata); 1934 drv_sta_set_4addr(local, sta->sdata, &sta->sta, true); 1935 } 1936 1937 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && 1938 sta->sdata->u.vlan.sta) { 1939 ieee80211_clear_fast_rx(sta); 1940 RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); 1941 } 1942 1943 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 1944 ieee80211_vif_dec_num_mcast(sta->sdata); 1945 1946 sta->sdata = vlansdata; 1947 ieee80211_check_fast_xmit(sta); 1948 1949 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) { 1950 ieee80211_vif_inc_num_mcast(sta->sdata); 1951 cfg80211_send_layer2_update(sta->sdata->dev, 1952 sta->sta.addr); 1953 } 1954 } 1955 1956 err = sta_apply_parameters(local, sta, params); 1957 if (err) 1958 goto out_err; 1959 1960 mutex_unlock(&local->sta_mtx); 1961 1962 if (sdata->vif.type == NL80211_IFTYPE_STATION && 1963 params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { 1964 ieee80211_recalc_ps(local); 1965 ieee80211_recalc_ps_vif(sdata); 1966 } 1967 1968 return 0; 1969 out_err: 1970 mutex_unlock(&local->sta_mtx); 1971 return err; 1972 } 1973 1974 #ifdef CONFIG_MAC80211_MESH 1975 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, 1976 const u8 *dst, const u8 *next_hop) 1977 { 1978 struct ieee80211_sub_if_data *sdata; 1979 struct mesh_path *mpath; 1980 struct sta_info *sta; 1981 1982 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 1983 1984 rcu_read_lock(); 1985 sta = sta_info_get(sdata, next_hop); 1986 if (!sta) { 1987 rcu_read_unlock(); 1988 return -ENOENT; 1989 } 1990 1991 mpath = mesh_path_add(sdata, dst); 1992 if (IS_ERR(mpath)) { 1993 rcu_read_unlock(); 1994 return PTR_ERR(mpath); 1995 } 1996 1997 mesh_path_fix_nexthop(mpath, sta); 1998 1999 rcu_read_unlock(); 2000 return 0; 2001 } 2002 2003 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, 2004 const u8 *dst) 2005 { 2006 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2007 2008 if (dst) 2009 return mesh_path_del(sdata, dst); 2010 2011 mesh_path_flush_by_iface(sdata); 2012 return 0; 2013 } 2014 2015 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, 2016 const u8 *dst, const u8 *next_hop) 2017 { 2018 struct ieee80211_sub_if_data *sdata; 2019 struct mesh_path *mpath; 2020 struct sta_info *sta; 2021 2022 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2023 2024 rcu_read_lock(); 2025 2026 sta = sta_info_get(sdata, next_hop); 2027 if (!sta) { 2028 rcu_read_unlock(); 2029 return -ENOENT; 2030 } 2031 2032 mpath = mesh_path_lookup(sdata, dst); 2033 if (!mpath) { 2034 rcu_read_unlock(); 2035 return -ENOENT; 2036 } 2037 2038 mesh_path_fix_nexthop(mpath, sta); 2039 2040 rcu_read_unlock(); 2041 return 0; 2042 } 2043 2044 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, 2045 struct mpath_info *pinfo) 2046 { 2047 struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); 2048 2049 if (next_hop_sta) 2050 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN); 2051 else 2052 eth_zero_addr(next_hop); 2053 2054 memset(pinfo, 0, sizeof(*pinfo)); 2055 2056 pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation; 2057 2058 pinfo->filled = MPATH_INFO_FRAME_QLEN | 2059 MPATH_INFO_SN | 2060 MPATH_INFO_METRIC | 2061 MPATH_INFO_EXPTIME | 2062 MPATH_INFO_DISCOVERY_TIMEOUT | 2063 MPATH_INFO_DISCOVERY_RETRIES | 2064 MPATH_INFO_FLAGS | 2065 MPATH_INFO_HOP_COUNT | 2066 MPATH_INFO_PATH_CHANGE; 2067 2068 pinfo->frame_qlen = mpath->frame_queue.qlen; 2069 pinfo->sn = mpath->sn; 2070 pinfo->metric = mpath->metric; 2071 if (time_before(jiffies, mpath->exp_time)) 2072 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); 2073 pinfo->discovery_timeout = 2074 jiffies_to_msecs(mpath->discovery_timeout); 2075 pinfo->discovery_retries = mpath->discovery_retries; 2076 if (mpath->flags & MESH_PATH_ACTIVE) 2077 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; 2078 if (mpath->flags & MESH_PATH_RESOLVING) 2079 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; 2080 if (mpath->flags & MESH_PATH_SN_VALID) 2081 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; 2082 if (mpath->flags & MESH_PATH_FIXED) 2083 pinfo->flags |= NL80211_MPATH_FLAG_FIXED; 2084 if (mpath->flags & MESH_PATH_RESOLVED) 2085 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; 2086 pinfo->hop_count = mpath->hop_count; 2087 pinfo->path_change_count = mpath->path_change_count; 2088 } 2089 2090 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, 2091 u8 *dst, u8 *next_hop, struct mpath_info *pinfo) 2092 2093 { 2094 struct ieee80211_sub_if_data *sdata; 2095 struct mesh_path *mpath; 2096 2097 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2098 2099 rcu_read_lock(); 2100 mpath = mesh_path_lookup(sdata, dst); 2101 if (!mpath) { 2102 rcu_read_unlock(); 2103 return -ENOENT; 2104 } 2105 memcpy(dst, mpath->dst, ETH_ALEN); 2106 mpath_set_pinfo(mpath, next_hop, pinfo); 2107 rcu_read_unlock(); 2108 return 0; 2109 } 2110 2111 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, 2112 int idx, u8 *dst, u8 *next_hop, 2113 struct mpath_info *pinfo) 2114 { 2115 struct ieee80211_sub_if_data *sdata; 2116 struct mesh_path *mpath; 2117 2118 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2119 2120 rcu_read_lock(); 2121 mpath = mesh_path_lookup_by_idx(sdata, idx); 2122 if (!mpath) { 2123 rcu_read_unlock(); 2124 return -ENOENT; 2125 } 2126 memcpy(dst, mpath->dst, ETH_ALEN); 2127 mpath_set_pinfo(mpath, next_hop, pinfo); 2128 rcu_read_unlock(); 2129 return 0; 2130 } 2131 2132 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, 2133 struct mpath_info *pinfo) 2134 { 2135 memset(pinfo, 0, sizeof(*pinfo)); 2136 memcpy(mpp, mpath->mpp, ETH_ALEN); 2137 2138 pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation; 2139 } 2140 2141 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, 2142 u8 *dst, u8 *mpp, struct mpath_info *pinfo) 2143 2144 { 2145 struct ieee80211_sub_if_data *sdata; 2146 struct mesh_path *mpath; 2147 2148 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2149 2150 rcu_read_lock(); 2151 mpath = mpp_path_lookup(sdata, dst); 2152 if (!mpath) { 2153 rcu_read_unlock(); 2154 return -ENOENT; 2155 } 2156 memcpy(dst, mpath->dst, ETH_ALEN); 2157 mpp_set_pinfo(mpath, mpp, pinfo); 2158 rcu_read_unlock(); 2159 return 0; 2160 } 2161 2162 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, 2163 int idx, u8 *dst, u8 *mpp, 2164 struct mpath_info *pinfo) 2165 { 2166 struct ieee80211_sub_if_data *sdata; 2167 struct mesh_path *mpath; 2168 2169 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2170 2171 rcu_read_lock(); 2172 mpath = mpp_path_lookup_by_idx(sdata, idx); 2173 if (!mpath) { 2174 rcu_read_unlock(); 2175 return -ENOENT; 2176 } 2177 memcpy(dst, mpath->dst, ETH_ALEN); 2178 mpp_set_pinfo(mpath, mpp, pinfo); 2179 rcu_read_unlock(); 2180 return 0; 2181 } 2182 2183 static int ieee80211_get_mesh_config(struct wiphy *wiphy, 2184 struct net_device *dev, 2185 struct mesh_config *conf) 2186 { 2187 struct ieee80211_sub_if_data *sdata; 2188 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2189 2190 memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); 2191 return 0; 2192 } 2193 2194 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) 2195 { 2196 return (mask >> (parm-1)) & 0x1; 2197 } 2198 2199 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, 2200 const struct mesh_setup *setup) 2201 { 2202 u8 *new_ie; 2203 struct ieee80211_sub_if_data *sdata = container_of(ifmsh, 2204 struct ieee80211_sub_if_data, u.mesh); 2205 int i; 2206 2207 /* allocate information elements */ 2208 new_ie = NULL; 2209 2210 if (setup->ie_len) { 2211 new_ie = kmemdup(setup->ie, setup->ie_len, 2212 GFP_KERNEL); 2213 if (!new_ie) 2214 return -ENOMEM; 2215 } 2216 ifmsh->ie_len = setup->ie_len; 2217 ifmsh->ie = new_ie; 2218 2219 /* now copy the rest of the setup parameters */ 2220 ifmsh->mesh_id_len = setup->mesh_id_len; 2221 memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); 2222 ifmsh->mesh_sp_id = setup->sync_method; 2223 ifmsh->mesh_pp_id = setup->path_sel_proto; 2224 ifmsh->mesh_pm_id = setup->path_metric; 2225 ifmsh->user_mpm = setup->user_mpm; 2226 ifmsh->mesh_auth_id = setup->auth_id; 2227 ifmsh->security = IEEE80211_MESH_SEC_NONE; 2228 ifmsh->userspace_handles_dfs = setup->userspace_handles_dfs; 2229 if (setup->is_authenticated) 2230 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; 2231 if (setup->is_secure) 2232 ifmsh->security |= IEEE80211_MESH_SEC_SECURED; 2233 2234 /* mcast rate setting in Mesh Node */ 2235 memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, 2236 sizeof(setup->mcast_rate)); 2237 sdata->vif.bss_conf.basic_rates = setup->basic_rates; 2238 2239 sdata->vif.bss_conf.beacon_int = setup->beacon_interval; 2240 sdata->vif.bss_conf.dtim_period = setup->dtim_period; 2241 2242 sdata->beacon_rate_set = false; 2243 if (wiphy_ext_feature_isset(sdata->local->hw.wiphy, 2244 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) { 2245 for (i = 0; i < NUM_NL80211_BANDS; i++) { 2246 sdata->beacon_rateidx_mask[i] = 2247 setup->beacon_rate.control[i].legacy; 2248 if (sdata->beacon_rateidx_mask[i]) 2249 sdata->beacon_rate_set = true; 2250 } 2251 } 2252 2253 return 0; 2254 } 2255 2256 static int ieee80211_update_mesh_config(struct wiphy *wiphy, 2257 struct net_device *dev, u32 mask, 2258 const struct mesh_config *nconf) 2259 { 2260 struct mesh_config *conf; 2261 struct ieee80211_sub_if_data *sdata; 2262 struct ieee80211_if_mesh *ifmsh; 2263 2264 sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2265 ifmsh = &sdata->u.mesh; 2266 2267 /* Set the config options which we are interested in setting */ 2268 conf = &(sdata->u.mesh.mshcfg); 2269 if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) 2270 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; 2271 if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) 2272 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; 2273 if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) 2274 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; 2275 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) 2276 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; 2277 if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) 2278 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; 2279 if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) 2280 conf->dot11MeshTTL = nconf->dot11MeshTTL; 2281 if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) 2282 conf->element_ttl = nconf->element_ttl; 2283 if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { 2284 if (ifmsh->user_mpm) 2285 return -EBUSY; 2286 conf->auto_open_plinks = nconf->auto_open_plinks; 2287 } 2288 if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) 2289 conf->dot11MeshNbrOffsetMaxNeighbor = 2290 nconf->dot11MeshNbrOffsetMaxNeighbor; 2291 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) 2292 conf->dot11MeshHWMPmaxPREQretries = 2293 nconf->dot11MeshHWMPmaxPREQretries; 2294 if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) 2295 conf->path_refresh_time = nconf->path_refresh_time; 2296 if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) 2297 conf->min_discovery_timeout = nconf->min_discovery_timeout; 2298 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) 2299 conf->dot11MeshHWMPactivePathTimeout = 2300 nconf->dot11MeshHWMPactivePathTimeout; 2301 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) 2302 conf->dot11MeshHWMPpreqMinInterval = 2303 nconf->dot11MeshHWMPpreqMinInterval; 2304 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask)) 2305 conf->dot11MeshHWMPperrMinInterval = 2306 nconf->dot11MeshHWMPperrMinInterval; 2307 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 2308 mask)) 2309 conf->dot11MeshHWMPnetDiameterTraversalTime = 2310 nconf->dot11MeshHWMPnetDiameterTraversalTime; 2311 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { 2312 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; 2313 ieee80211_mesh_root_setup(ifmsh); 2314 } 2315 if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { 2316 /* our current gate announcement implementation rides on root 2317 * announcements, so require this ifmsh to also be a root node 2318 * */ 2319 if (nconf->dot11MeshGateAnnouncementProtocol && 2320 !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) { 2321 conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; 2322 ieee80211_mesh_root_setup(ifmsh); 2323 } 2324 conf->dot11MeshGateAnnouncementProtocol = 2325 nconf->dot11MeshGateAnnouncementProtocol; 2326 } 2327 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) 2328 conf->dot11MeshHWMPRannInterval = 2329 nconf->dot11MeshHWMPRannInterval; 2330 if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) 2331 conf->dot11MeshForwarding = nconf->dot11MeshForwarding; 2332 if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { 2333 /* our RSSI threshold implementation is supported only for 2334 * devices that report signal in dBm. 2335 */ 2336 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM)) 2337 return -ENOTSUPP; 2338 conf->rssi_threshold = nconf->rssi_threshold; 2339 } 2340 if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { 2341 conf->ht_opmode = nconf->ht_opmode; 2342 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; 2343 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); 2344 } 2345 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) 2346 conf->dot11MeshHWMPactivePathToRootTimeout = 2347 nconf->dot11MeshHWMPactivePathToRootTimeout; 2348 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) 2349 conf->dot11MeshHWMProotInterval = 2350 nconf->dot11MeshHWMProotInterval; 2351 if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) 2352 conf->dot11MeshHWMPconfirmationInterval = 2353 nconf->dot11MeshHWMPconfirmationInterval; 2354 if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { 2355 conf->power_mode = nconf->power_mode; 2356 ieee80211_mps_local_status_update(sdata); 2357 } 2358 if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) 2359 conf->dot11MeshAwakeWindowDuration = 2360 nconf->dot11MeshAwakeWindowDuration; 2361 if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) 2362 conf->plink_timeout = nconf->plink_timeout; 2363 if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_GATE, mask)) 2364 conf->dot11MeshConnectedToMeshGate = 2365 nconf->dot11MeshConnectedToMeshGate; 2366 if (_chg_mesh_attr(NL80211_MESHCONF_NOLEARN, mask)) 2367 conf->dot11MeshNolearn = nconf->dot11MeshNolearn; 2368 if (_chg_mesh_attr(NL80211_MESHCONF_CONNECTED_TO_AS, mask)) 2369 conf->dot11MeshConnectedToAuthServer = 2370 nconf->dot11MeshConnectedToAuthServer; 2371 ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); 2372 return 0; 2373 } 2374 2375 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, 2376 const struct mesh_config *conf, 2377 const struct mesh_setup *setup) 2378 { 2379 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2380 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 2381 int err; 2382 2383 memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); 2384 err = copy_mesh_setup(ifmsh, setup); 2385 if (err) 2386 return err; 2387 2388 sdata->control_port_over_nl80211 = setup->control_port_over_nl80211; 2389 2390 /* can mesh use other SMPS modes? */ 2391 sdata->smps_mode = IEEE80211_SMPS_OFF; 2392 sdata->needed_rx_chains = sdata->local->rx_chains; 2393 2394 mutex_lock(&sdata->local->mtx); 2395 err = ieee80211_vif_use_channel(sdata, &setup->chandef, 2396 IEEE80211_CHANCTX_SHARED); 2397 mutex_unlock(&sdata->local->mtx); 2398 if (err) 2399 return err; 2400 2401 return ieee80211_start_mesh(sdata); 2402 } 2403 2404 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) 2405 { 2406 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2407 2408 ieee80211_stop_mesh(sdata); 2409 mutex_lock(&sdata->local->mtx); 2410 ieee80211_vif_release_channel(sdata); 2411 kfree(sdata->u.mesh.ie); 2412 mutex_unlock(&sdata->local->mtx); 2413 2414 return 0; 2415 } 2416 #endif 2417 2418 static int ieee80211_change_bss(struct wiphy *wiphy, 2419 struct net_device *dev, 2420 struct bss_parameters *params) 2421 { 2422 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2423 struct ieee80211_supported_band *sband; 2424 u32 changed = 0; 2425 2426 if (!sdata_dereference(sdata->u.ap.beacon, sdata)) 2427 return -ENOENT; 2428 2429 sband = ieee80211_get_sband(sdata); 2430 if (!sband) 2431 return -EINVAL; 2432 2433 if (params->use_cts_prot >= 0) { 2434 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; 2435 changed |= BSS_CHANGED_ERP_CTS_PROT; 2436 } 2437 if (params->use_short_preamble >= 0) { 2438 sdata->vif.bss_conf.use_short_preamble = 2439 params->use_short_preamble; 2440 changed |= BSS_CHANGED_ERP_PREAMBLE; 2441 } 2442 2443 if (!sdata->vif.bss_conf.use_short_slot && 2444 (sband->band == NL80211_BAND_5GHZ || 2445 sband->band == NL80211_BAND_6GHZ)) { 2446 sdata->vif.bss_conf.use_short_slot = true; 2447 changed |= BSS_CHANGED_ERP_SLOT; 2448 } 2449 2450 if (params->use_short_slot_time >= 0) { 2451 sdata->vif.bss_conf.use_short_slot = 2452 params->use_short_slot_time; 2453 changed |= BSS_CHANGED_ERP_SLOT; 2454 } 2455 2456 if (params->basic_rates) { 2457 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, 2458 wiphy->bands[sband->band], 2459 params->basic_rates, 2460 params->basic_rates_len, 2461 &sdata->vif.bss_conf.basic_rates); 2462 changed |= BSS_CHANGED_BASIC_RATES; 2463 ieee80211_check_rate_mask(sdata); 2464 } 2465 2466 if (params->ap_isolate >= 0) { 2467 if (params->ap_isolate) 2468 sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2469 else 2470 sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; 2471 ieee80211_check_fast_rx_iface(sdata); 2472 } 2473 2474 if (params->ht_opmode >= 0) { 2475 sdata->vif.bss_conf.ht_operation_mode = 2476 (u16) params->ht_opmode; 2477 changed |= BSS_CHANGED_HT; 2478 } 2479 2480 if (params->p2p_ctwindow >= 0) { 2481 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2482 ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2483 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2484 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; 2485 changed |= BSS_CHANGED_P2P_PS; 2486 } 2487 2488 if (params->p2p_opp_ps > 0) { 2489 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= 2490 IEEE80211_P2P_OPPPS_ENABLE_BIT; 2491 changed |= BSS_CHANGED_P2P_PS; 2492 } else if (params->p2p_opp_ps == 0) { 2493 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= 2494 ~IEEE80211_P2P_OPPPS_ENABLE_BIT; 2495 changed |= BSS_CHANGED_P2P_PS; 2496 } 2497 2498 ieee80211_bss_info_change_notify(sdata, changed); 2499 2500 return 0; 2501 } 2502 2503 static int ieee80211_set_txq_params(struct wiphy *wiphy, 2504 struct net_device *dev, 2505 struct ieee80211_txq_params *params) 2506 { 2507 struct ieee80211_local *local = wiphy_priv(wiphy); 2508 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2509 struct ieee80211_tx_queue_params p; 2510 2511 if (!local->ops->conf_tx) 2512 return -EOPNOTSUPP; 2513 2514 if (local->hw.queues < IEEE80211_NUM_ACS) 2515 return -EOPNOTSUPP; 2516 2517 memset(&p, 0, sizeof(p)); 2518 p.aifs = params->aifs; 2519 p.cw_max = params->cwmax; 2520 p.cw_min = params->cwmin; 2521 p.txop = params->txop; 2522 2523 /* 2524 * Setting tx queue params disables u-apsd because it's only 2525 * called in master mode. 2526 */ 2527 p.uapsd = false; 2528 2529 ieee80211_regulatory_limit_wmm_params(sdata, &p, params->ac); 2530 2531 sdata->tx_conf[params->ac] = p; 2532 if (drv_conf_tx(local, sdata, params->ac, &p)) { 2533 wiphy_debug(local->hw.wiphy, 2534 "failed to set TX queue parameters for AC %d\n", 2535 params->ac); 2536 return -EINVAL; 2537 } 2538 2539 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 2540 2541 return 0; 2542 } 2543 2544 #ifdef CONFIG_PM 2545 static int ieee80211_suspend(struct wiphy *wiphy, 2546 struct cfg80211_wowlan *wowlan) 2547 { 2548 return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); 2549 } 2550 2551 static int ieee80211_resume(struct wiphy *wiphy) 2552 { 2553 return __ieee80211_resume(wiphy_priv(wiphy)); 2554 } 2555 #else 2556 #define ieee80211_suspend NULL 2557 #define ieee80211_resume NULL 2558 #endif 2559 2560 static int ieee80211_scan(struct wiphy *wiphy, 2561 struct cfg80211_scan_request *req) 2562 { 2563 struct ieee80211_sub_if_data *sdata; 2564 2565 sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); 2566 2567 switch (ieee80211_vif_type_p2p(&sdata->vif)) { 2568 case NL80211_IFTYPE_STATION: 2569 case NL80211_IFTYPE_ADHOC: 2570 case NL80211_IFTYPE_MESH_POINT: 2571 case NL80211_IFTYPE_P2P_CLIENT: 2572 case NL80211_IFTYPE_P2P_DEVICE: 2573 break; 2574 case NL80211_IFTYPE_P2P_GO: 2575 if (sdata->local->ops->hw_scan) 2576 break; 2577 /* 2578 * FIXME: implement NoA while scanning in software, 2579 * for now fall through to allow scanning only when 2580 * beaconing hasn't been configured yet 2581 */ 2582 fallthrough; 2583 case NL80211_IFTYPE_AP: 2584 /* 2585 * If the scan has been forced (and the driver supports 2586 * forcing), don't care about being beaconing already. 2587 * This will create problems to the attached stations (e.g. all 2588 * the frames sent while scanning on other channel will be 2589 * lost) 2590 */ 2591 if (sdata->u.ap.beacon && 2592 (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || 2593 !(req->flags & NL80211_SCAN_FLAG_AP))) 2594 return -EOPNOTSUPP; 2595 break; 2596 case NL80211_IFTYPE_NAN: 2597 default: 2598 return -EOPNOTSUPP; 2599 } 2600 2601 return ieee80211_request_scan(sdata, req); 2602 } 2603 2604 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev) 2605 { 2606 ieee80211_scan_cancel(wiphy_priv(wiphy)); 2607 } 2608 2609 static int 2610 ieee80211_sched_scan_start(struct wiphy *wiphy, 2611 struct net_device *dev, 2612 struct cfg80211_sched_scan_request *req) 2613 { 2614 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2615 2616 if (!sdata->local->ops->sched_scan_start) 2617 return -EOPNOTSUPP; 2618 2619 return ieee80211_request_sched_scan_start(sdata, req); 2620 } 2621 2622 static int 2623 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev, 2624 u64 reqid) 2625 { 2626 struct ieee80211_local *local = wiphy_priv(wiphy); 2627 2628 if (!local->ops->sched_scan_stop) 2629 return -EOPNOTSUPP; 2630 2631 return ieee80211_request_sched_scan_stop(local); 2632 } 2633 2634 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, 2635 struct cfg80211_auth_request *req) 2636 { 2637 return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2638 } 2639 2640 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, 2641 struct cfg80211_assoc_request *req) 2642 { 2643 return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2644 } 2645 2646 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, 2647 struct cfg80211_deauth_request *req) 2648 { 2649 return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); 2650 } 2651 2652 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, 2653 struct cfg80211_disassoc_request *req) 2654 { 2655 return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); 2656 } 2657 2658 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, 2659 struct cfg80211_ibss_params *params) 2660 { 2661 return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); 2662 } 2663 2664 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) 2665 { 2666 return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2667 } 2668 2669 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, 2670 struct ocb_setup *setup) 2671 { 2672 return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); 2673 } 2674 2675 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) 2676 { 2677 return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); 2678 } 2679 2680 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, 2681 int rate[NUM_NL80211_BANDS]) 2682 { 2683 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2684 2685 memcpy(sdata->vif.bss_conf.mcast_rate, rate, 2686 sizeof(int) * NUM_NL80211_BANDS); 2687 2688 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_MCAST_RATE); 2689 2690 return 0; 2691 } 2692 2693 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) 2694 { 2695 struct ieee80211_local *local = wiphy_priv(wiphy); 2696 int err; 2697 2698 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { 2699 ieee80211_check_fast_xmit_all(local); 2700 2701 err = drv_set_frag_threshold(local, wiphy->frag_threshold); 2702 2703 if (err) { 2704 ieee80211_check_fast_xmit_all(local); 2705 return err; 2706 } 2707 } 2708 2709 if ((changed & WIPHY_PARAM_COVERAGE_CLASS) || 2710 (changed & WIPHY_PARAM_DYN_ACK)) { 2711 s16 coverage_class; 2712 2713 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? 2714 wiphy->coverage_class : -1; 2715 err = drv_set_coverage_class(local, coverage_class); 2716 2717 if (err) 2718 return err; 2719 } 2720 2721 if (changed & WIPHY_PARAM_RTS_THRESHOLD) { 2722 err = drv_set_rts_threshold(local, wiphy->rts_threshold); 2723 2724 if (err) 2725 return err; 2726 } 2727 2728 if (changed & WIPHY_PARAM_RETRY_SHORT) { 2729 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) 2730 return -EINVAL; 2731 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; 2732 } 2733 if (changed & WIPHY_PARAM_RETRY_LONG) { 2734 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) 2735 return -EINVAL; 2736 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; 2737 } 2738 if (changed & 2739 (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) 2740 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); 2741 2742 if (changed & (WIPHY_PARAM_TXQ_LIMIT | 2743 WIPHY_PARAM_TXQ_MEMORY_LIMIT | 2744 WIPHY_PARAM_TXQ_QUANTUM)) 2745 ieee80211_txq_set_params(local); 2746 2747 return 0; 2748 } 2749 2750 static int ieee80211_set_tx_power(struct wiphy *wiphy, 2751 struct wireless_dev *wdev, 2752 enum nl80211_tx_power_setting type, int mbm) 2753 { 2754 struct ieee80211_local *local = wiphy_priv(wiphy); 2755 struct ieee80211_sub_if_data *sdata; 2756 enum nl80211_tx_power_setting txp_type = type; 2757 bool update_txp_type = false; 2758 bool has_monitor = false; 2759 2760 if (wdev) { 2761 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2762 2763 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { 2764 sdata = wiphy_dereference(local->hw.wiphy, 2765 local->monitor_sdata); 2766 if (!sdata) 2767 return -EOPNOTSUPP; 2768 } 2769 2770 switch (type) { 2771 case NL80211_TX_POWER_AUTOMATIC: 2772 sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2773 txp_type = NL80211_TX_POWER_LIMITED; 2774 break; 2775 case NL80211_TX_POWER_LIMITED: 2776 case NL80211_TX_POWER_FIXED: 2777 if (mbm < 0 || (mbm % 100)) 2778 return -EOPNOTSUPP; 2779 sdata->user_power_level = MBM_TO_DBM(mbm); 2780 break; 2781 } 2782 2783 if (txp_type != sdata->vif.bss_conf.txpower_type) { 2784 update_txp_type = true; 2785 sdata->vif.bss_conf.txpower_type = txp_type; 2786 } 2787 2788 ieee80211_recalc_txpower(sdata, update_txp_type); 2789 2790 return 0; 2791 } 2792 2793 switch (type) { 2794 case NL80211_TX_POWER_AUTOMATIC: 2795 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; 2796 txp_type = NL80211_TX_POWER_LIMITED; 2797 break; 2798 case NL80211_TX_POWER_LIMITED: 2799 case NL80211_TX_POWER_FIXED: 2800 if (mbm < 0 || (mbm % 100)) 2801 return -EOPNOTSUPP; 2802 local->user_power_level = MBM_TO_DBM(mbm); 2803 break; 2804 } 2805 2806 mutex_lock(&local->iflist_mtx); 2807 list_for_each_entry(sdata, &local->interfaces, list) { 2808 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) { 2809 has_monitor = true; 2810 continue; 2811 } 2812 sdata->user_power_level = local->user_power_level; 2813 if (txp_type != sdata->vif.bss_conf.txpower_type) 2814 update_txp_type = true; 2815 sdata->vif.bss_conf.txpower_type = txp_type; 2816 } 2817 list_for_each_entry(sdata, &local->interfaces, list) { 2818 if (sdata->vif.type == NL80211_IFTYPE_MONITOR) 2819 continue; 2820 ieee80211_recalc_txpower(sdata, update_txp_type); 2821 } 2822 mutex_unlock(&local->iflist_mtx); 2823 2824 if (has_monitor) { 2825 sdata = wiphy_dereference(local->hw.wiphy, 2826 local->monitor_sdata); 2827 if (sdata) { 2828 sdata->user_power_level = local->user_power_level; 2829 if (txp_type != sdata->vif.bss_conf.txpower_type) 2830 update_txp_type = true; 2831 sdata->vif.bss_conf.txpower_type = txp_type; 2832 2833 ieee80211_recalc_txpower(sdata, update_txp_type); 2834 } 2835 } 2836 2837 return 0; 2838 } 2839 2840 static int ieee80211_get_tx_power(struct wiphy *wiphy, 2841 struct wireless_dev *wdev, 2842 int *dbm) 2843 { 2844 struct ieee80211_local *local = wiphy_priv(wiphy); 2845 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2846 2847 if (local->ops->get_txpower) 2848 return drv_get_txpower(local, sdata, dbm); 2849 2850 if (!local->use_chanctx) 2851 *dbm = local->hw.conf.power_level; 2852 else 2853 *dbm = sdata->vif.bss_conf.txpower; 2854 2855 return 0; 2856 } 2857 2858 static void ieee80211_rfkill_poll(struct wiphy *wiphy) 2859 { 2860 struct ieee80211_local *local = wiphy_priv(wiphy); 2861 2862 drv_rfkill_poll(local); 2863 } 2864 2865 #ifdef CONFIG_NL80211_TESTMODE 2866 static int ieee80211_testmode_cmd(struct wiphy *wiphy, 2867 struct wireless_dev *wdev, 2868 void *data, int len) 2869 { 2870 struct ieee80211_local *local = wiphy_priv(wiphy); 2871 struct ieee80211_vif *vif = NULL; 2872 2873 if (!local->ops->testmode_cmd) 2874 return -EOPNOTSUPP; 2875 2876 if (wdev) { 2877 struct ieee80211_sub_if_data *sdata; 2878 2879 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 2880 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) 2881 vif = &sdata->vif; 2882 } 2883 2884 return local->ops->testmode_cmd(&local->hw, vif, data, len); 2885 } 2886 2887 static int ieee80211_testmode_dump(struct wiphy *wiphy, 2888 struct sk_buff *skb, 2889 struct netlink_callback *cb, 2890 void *data, int len) 2891 { 2892 struct ieee80211_local *local = wiphy_priv(wiphy); 2893 2894 if (!local->ops->testmode_dump) 2895 return -EOPNOTSUPP; 2896 2897 return local->ops->testmode_dump(&local->hw, skb, cb, data, len); 2898 } 2899 #endif 2900 2901 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2902 enum ieee80211_smps_mode smps_mode) 2903 { 2904 const u8 *ap; 2905 enum ieee80211_smps_mode old_req; 2906 int err; 2907 struct sta_info *sta; 2908 bool tdls_peer_found = false; 2909 2910 lockdep_assert_held(&sdata->wdev.mtx); 2911 2912 if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) 2913 return -EINVAL; 2914 2915 old_req = sdata->u.mgd.req_smps; 2916 sdata->u.mgd.req_smps = smps_mode; 2917 2918 if (old_req == smps_mode && 2919 smps_mode != IEEE80211_SMPS_AUTOMATIC) 2920 return 0; 2921 2922 /* 2923 * If not associated, or current association is not an HT 2924 * association, there's no need to do anything, just store 2925 * the new value until we associate. 2926 */ 2927 if (!sdata->u.mgd.associated || 2928 sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) 2929 return 0; 2930 2931 ap = sdata->u.mgd.bssid; 2932 2933 rcu_read_lock(); 2934 list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) { 2935 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded || 2936 !test_sta_flag(sta, WLAN_STA_AUTHORIZED)) 2937 continue; 2938 2939 tdls_peer_found = true; 2940 break; 2941 } 2942 rcu_read_unlock(); 2943 2944 if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { 2945 if (tdls_peer_found || !sdata->u.mgd.powersave) 2946 smps_mode = IEEE80211_SMPS_OFF; 2947 else 2948 smps_mode = IEEE80211_SMPS_DYNAMIC; 2949 } 2950 2951 /* send SM PS frame to AP */ 2952 err = ieee80211_send_smps_action(sdata, smps_mode, 2953 ap, ap); 2954 if (err) 2955 sdata->u.mgd.req_smps = old_req; 2956 else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found) 2957 ieee80211_teardown_tdls_peers(sdata); 2958 2959 return err; 2960 } 2961 2962 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, 2963 bool enabled, int timeout) 2964 { 2965 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 2966 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 2967 2968 if (sdata->vif.type != NL80211_IFTYPE_STATION) 2969 return -EOPNOTSUPP; 2970 2971 if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS)) 2972 return -EOPNOTSUPP; 2973 2974 if (enabled == sdata->u.mgd.powersave && 2975 timeout == local->dynamic_ps_forced_timeout) 2976 return 0; 2977 2978 sdata->u.mgd.powersave = enabled; 2979 local->dynamic_ps_forced_timeout = timeout; 2980 2981 /* no change, but if automatic follow powersave */ 2982 sdata_lock(sdata); 2983 __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); 2984 sdata_unlock(sdata); 2985 2986 if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS)) 2987 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 2988 2989 ieee80211_recalc_ps(local); 2990 ieee80211_recalc_ps_vif(sdata); 2991 ieee80211_check_fast_rx_iface(sdata); 2992 2993 return 0; 2994 } 2995 2996 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, 2997 struct net_device *dev, 2998 s32 rssi_thold, u32 rssi_hyst) 2999 { 3000 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3001 struct ieee80211_vif *vif = &sdata->vif; 3002 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 3003 3004 if (rssi_thold == bss_conf->cqm_rssi_thold && 3005 rssi_hyst == bss_conf->cqm_rssi_hyst) 3006 return 0; 3007 3008 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER && 3009 !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) 3010 return -EOPNOTSUPP; 3011 3012 bss_conf->cqm_rssi_thold = rssi_thold; 3013 bss_conf->cqm_rssi_hyst = rssi_hyst; 3014 bss_conf->cqm_rssi_low = 0; 3015 bss_conf->cqm_rssi_high = 0; 3016 sdata->u.mgd.last_cqm_event_signal = 0; 3017 3018 /* tell the driver upon association, unless already associated */ 3019 if (sdata->u.mgd.associated && 3020 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 3021 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 3022 3023 return 0; 3024 } 3025 3026 static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy, 3027 struct net_device *dev, 3028 s32 rssi_low, s32 rssi_high) 3029 { 3030 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3031 struct ieee80211_vif *vif = &sdata->vif; 3032 struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; 3033 3034 if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) 3035 return -EOPNOTSUPP; 3036 3037 bss_conf->cqm_rssi_low = rssi_low; 3038 bss_conf->cqm_rssi_high = rssi_high; 3039 bss_conf->cqm_rssi_thold = 0; 3040 bss_conf->cqm_rssi_hyst = 0; 3041 sdata->u.mgd.last_cqm_event_signal = 0; 3042 3043 /* tell the driver upon association, unless already associated */ 3044 if (sdata->u.mgd.associated && 3045 sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) 3046 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); 3047 3048 return 0; 3049 } 3050 3051 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, 3052 struct net_device *dev, 3053 unsigned int link_id, 3054 const u8 *addr, 3055 const struct cfg80211_bitrate_mask *mask) 3056 { 3057 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3058 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 3059 int i, ret; 3060 3061 if (!ieee80211_sdata_running(sdata)) 3062 return -ENETDOWN; 3063 3064 /* 3065 * If active validate the setting and reject it if it doesn't leave 3066 * at least one basic rate usable, since we really have to be able 3067 * to send something, and if we're an AP we have to be able to do 3068 * so at a basic rate so that all clients can receive it. 3069 */ 3070 if (rcu_access_pointer(sdata->vif.bss_conf.chanctx_conf) && 3071 sdata->vif.bss_conf.chandef.chan) { 3072 u32 basic_rates = sdata->vif.bss_conf.basic_rates; 3073 enum nl80211_band band = sdata->vif.bss_conf.chandef.chan->band; 3074 3075 if (!(mask->control[band].legacy & basic_rates)) 3076 return -EINVAL; 3077 } 3078 3079 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) { 3080 ret = drv_set_bitrate_mask(local, sdata, mask); 3081 if (ret) 3082 return ret; 3083 } 3084 3085 for (i = 0; i < NUM_NL80211_BANDS; i++) { 3086 struct ieee80211_supported_band *sband = wiphy->bands[i]; 3087 int j; 3088 3089 sdata->rc_rateidx_mask[i] = mask->control[i].legacy; 3090 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, 3091 sizeof(mask->control[i].ht_mcs)); 3092 memcpy(sdata->rc_rateidx_vht_mcs_mask[i], 3093 mask->control[i].vht_mcs, 3094 sizeof(mask->control[i].vht_mcs)); 3095 3096 sdata->rc_has_mcs_mask[i] = false; 3097 sdata->rc_has_vht_mcs_mask[i] = false; 3098 if (!sband) 3099 continue; 3100 3101 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { 3102 if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) { 3103 sdata->rc_has_mcs_mask[i] = true; 3104 break; 3105 } 3106 } 3107 3108 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { 3109 if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) { 3110 sdata->rc_has_vht_mcs_mask[i] = true; 3111 break; 3112 } 3113 } 3114 } 3115 3116 return 0; 3117 } 3118 3119 static int ieee80211_start_radar_detection(struct wiphy *wiphy, 3120 struct net_device *dev, 3121 struct cfg80211_chan_def *chandef, 3122 u32 cac_time_ms) 3123 { 3124 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3125 struct ieee80211_local *local = sdata->local; 3126 int err; 3127 3128 mutex_lock(&local->mtx); 3129 if (!list_empty(&local->roc_list) || local->scanning) { 3130 err = -EBUSY; 3131 goto out_unlock; 3132 } 3133 3134 /* whatever, but channel contexts should not complain about that one */ 3135 sdata->smps_mode = IEEE80211_SMPS_OFF; 3136 sdata->needed_rx_chains = local->rx_chains; 3137 3138 err = ieee80211_vif_use_channel(sdata, chandef, 3139 IEEE80211_CHANCTX_SHARED); 3140 if (err) 3141 goto out_unlock; 3142 3143 ieee80211_queue_delayed_work(&sdata->local->hw, 3144 &sdata->dfs_cac_timer_work, 3145 msecs_to_jiffies(cac_time_ms)); 3146 3147 out_unlock: 3148 mutex_unlock(&local->mtx); 3149 return err; 3150 } 3151 3152 static void ieee80211_end_cac(struct wiphy *wiphy, 3153 struct net_device *dev) 3154 { 3155 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3156 struct ieee80211_local *local = sdata->local; 3157 3158 mutex_lock(&local->mtx); 3159 list_for_each_entry(sdata, &local->interfaces, list) { 3160 /* it might be waiting for the local->mtx, but then 3161 * by the time it gets it, sdata->wdev.cac_started 3162 * will no longer be true 3163 */ 3164 cancel_delayed_work(&sdata->dfs_cac_timer_work); 3165 3166 if (sdata->wdev.cac_started) { 3167 ieee80211_vif_release_channel(sdata); 3168 sdata->wdev.cac_started = false; 3169 } 3170 } 3171 mutex_unlock(&local->mtx); 3172 } 3173 3174 static struct cfg80211_beacon_data * 3175 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) 3176 { 3177 struct cfg80211_beacon_data *new_beacon; 3178 u8 *pos; 3179 int len; 3180 3181 len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + 3182 beacon->proberesp_ies_len + beacon->assocresp_ies_len + 3183 beacon->probe_resp_len + beacon->lci_len + beacon->civicloc_len + 3184 ieee80211_get_mbssid_beacon_len(beacon->mbssid_ies); 3185 3186 new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); 3187 if (!new_beacon) 3188 return NULL; 3189 3190 if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) { 3191 new_beacon->mbssid_ies = 3192 kzalloc(struct_size(new_beacon->mbssid_ies, 3193 elem, beacon->mbssid_ies->cnt), 3194 GFP_KERNEL); 3195 if (!new_beacon->mbssid_ies) { 3196 kfree(new_beacon); 3197 return NULL; 3198 } 3199 } 3200 3201 pos = (u8 *)(new_beacon + 1); 3202 if (beacon->head_len) { 3203 new_beacon->head_len = beacon->head_len; 3204 new_beacon->head = pos; 3205 memcpy(pos, beacon->head, beacon->head_len); 3206 pos += beacon->head_len; 3207 } 3208 if (beacon->tail_len) { 3209 new_beacon->tail_len = beacon->tail_len; 3210 new_beacon->tail = pos; 3211 memcpy(pos, beacon->tail, beacon->tail_len); 3212 pos += beacon->tail_len; 3213 } 3214 if (beacon->beacon_ies_len) { 3215 new_beacon->beacon_ies_len = beacon->beacon_ies_len; 3216 new_beacon->beacon_ies = pos; 3217 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); 3218 pos += beacon->beacon_ies_len; 3219 } 3220 if (beacon->proberesp_ies_len) { 3221 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; 3222 new_beacon->proberesp_ies = pos; 3223 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); 3224 pos += beacon->proberesp_ies_len; 3225 } 3226 if (beacon->assocresp_ies_len) { 3227 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; 3228 new_beacon->assocresp_ies = pos; 3229 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); 3230 pos += beacon->assocresp_ies_len; 3231 } 3232 if (beacon->probe_resp_len) { 3233 new_beacon->probe_resp_len = beacon->probe_resp_len; 3234 new_beacon->probe_resp = pos; 3235 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); 3236 pos += beacon->probe_resp_len; 3237 } 3238 if (beacon->mbssid_ies && beacon->mbssid_ies->cnt) 3239 pos += ieee80211_copy_mbssid_beacon(pos, 3240 new_beacon->mbssid_ies, 3241 beacon->mbssid_ies); 3242 3243 /* might copy -1, meaning no changes requested */ 3244 new_beacon->ftm_responder = beacon->ftm_responder; 3245 if (beacon->lci) { 3246 new_beacon->lci_len = beacon->lci_len; 3247 new_beacon->lci = pos; 3248 memcpy(pos, beacon->lci, beacon->lci_len); 3249 pos += beacon->lci_len; 3250 } 3251 if (beacon->civicloc) { 3252 new_beacon->civicloc_len = beacon->civicloc_len; 3253 new_beacon->civicloc = pos; 3254 memcpy(pos, beacon->civicloc, beacon->civicloc_len); 3255 pos += beacon->civicloc_len; 3256 } 3257 3258 return new_beacon; 3259 } 3260 3261 void ieee80211_csa_finish(struct ieee80211_vif *vif) 3262 { 3263 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3264 struct ieee80211_local *local = sdata->local; 3265 3266 rcu_read_lock(); 3267 3268 if (vif->mbssid_tx_vif == vif) { 3269 /* Trigger ieee80211_csa_finish() on the non-transmitting 3270 * interfaces when channel switch is received on 3271 * transmitting interface 3272 */ 3273 struct ieee80211_sub_if_data *iter; 3274 3275 list_for_each_entry_rcu(iter, &local->interfaces, list) { 3276 if (!ieee80211_sdata_running(iter)) 3277 continue; 3278 3279 if (iter == sdata || iter->vif.mbssid_tx_vif != vif) 3280 continue; 3281 3282 ieee80211_queue_work(&iter->local->hw, 3283 &iter->csa_finalize_work); 3284 } 3285 } 3286 ieee80211_queue_work(&local->hw, &sdata->csa_finalize_work); 3287 3288 rcu_read_unlock(); 3289 } 3290 EXPORT_SYMBOL(ieee80211_csa_finish); 3291 3292 void ieee80211_channel_switch_disconnect(struct ieee80211_vif *vif, bool block_tx) 3293 { 3294 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 3295 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3296 struct ieee80211_local *local = sdata->local; 3297 3298 sdata->csa_block_tx = block_tx; 3299 sdata_info(sdata, "channel switch failed, disconnecting\n"); 3300 ieee80211_queue_work(&local->hw, &ifmgd->csa_connection_drop_work); 3301 } 3302 EXPORT_SYMBOL(ieee80211_channel_switch_disconnect); 3303 3304 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, 3305 u32 *changed) 3306 { 3307 int err; 3308 3309 switch (sdata->vif.type) { 3310 case NL80211_IFTYPE_AP: 3311 if (!sdata->u.ap.next_beacon) 3312 return -EINVAL; 3313 3314 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 3315 NULL, NULL); 3316 ieee80211_free_next_beacon(sdata); 3317 3318 if (err < 0) 3319 return err; 3320 *changed |= err; 3321 break; 3322 case NL80211_IFTYPE_ADHOC: 3323 err = ieee80211_ibss_finish_csa(sdata); 3324 if (err < 0) 3325 return err; 3326 *changed |= err; 3327 break; 3328 #ifdef CONFIG_MAC80211_MESH 3329 case NL80211_IFTYPE_MESH_POINT: 3330 err = ieee80211_mesh_finish_csa(sdata); 3331 if (err < 0) 3332 return err; 3333 *changed |= err; 3334 break; 3335 #endif 3336 default: 3337 WARN_ON(1); 3338 return -EINVAL; 3339 } 3340 3341 return 0; 3342 } 3343 3344 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 3345 { 3346 struct ieee80211_local *local = sdata->local; 3347 u32 changed = 0; 3348 int err; 3349 3350 sdata_assert_lock(sdata); 3351 lockdep_assert_held(&local->mtx); 3352 lockdep_assert_held(&local->chanctx_mtx); 3353 3354 /* 3355 * using reservation isn't immediate as it may be deferred until later 3356 * with multi-vif. once reservation is complete it will re-schedule the 3357 * work with no reserved_chanctx so verify chandef to check if it 3358 * completed successfully 3359 */ 3360 3361 if (sdata->reserved_chanctx) { 3362 /* 3363 * with multi-vif csa driver may call ieee80211_csa_finish() 3364 * many times while waiting for other interfaces to use their 3365 * reservations 3366 */ 3367 if (sdata->reserved_ready) 3368 return 0; 3369 3370 return ieee80211_vif_use_reserved_context(sdata); 3371 } 3372 3373 if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, 3374 &sdata->csa_chandef)) 3375 return -EINVAL; 3376 3377 sdata->vif.bss_conf.csa_active = false; 3378 3379 err = ieee80211_set_after_csa_beacon(sdata, &changed); 3380 if (err) 3381 return err; 3382 3383 ieee80211_bss_info_change_notify(sdata, changed); 3384 3385 if (sdata->csa_block_tx) { 3386 ieee80211_wake_vif_queues(local, sdata, 3387 IEEE80211_QUEUE_STOP_REASON_CSA); 3388 sdata->csa_block_tx = false; 3389 } 3390 3391 err = drv_post_channel_switch(sdata); 3392 if (err) 3393 return err; 3394 3395 cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef, 0); 3396 3397 return 0; 3398 } 3399 3400 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) 3401 { 3402 if (__ieee80211_csa_finalize(sdata)) { 3403 sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); 3404 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, 3405 GFP_KERNEL); 3406 } 3407 } 3408 3409 void ieee80211_csa_finalize_work(struct work_struct *work) 3410 { 3411 struct ieee80211_sub_if_data *sdata = 3412 container_of(work, struct ieee80211_sub_if_data, 3413 csa_finalize_work); 3414 struct ieee80211_local *local = sdata->local; 3415 3416 sdata_lock(sdata); 3417 mutex_lock(&local->mtx); 3418 mutex_lock(&local->chanctx_mtx); 3419 3420 /* AP might have been stopped while waiting for the lock. */ 3421 if (!sdata->vif.bss_conf.csa_active) 3422 goto unlock; 3423 3424 if (!ieee80211_sdata_running(sdata)) 3425 goto unlock; 3426 3427 ieee80211_csa_finalize(sdata); 3428 3429 unlock: 3430 mutex_unlock(&local->chanctx_mtx); 3431 mutex_unlock(&local->mtx); 3432 sdata_unlock(sdata); 3433 } 3434 3435 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, 3436 struct cfg80211_csa_settings *params, 3437 u32 *changed) 3438 { 3439 struct ieee80211_csa_settings csa = {}; 3440 int err; 3441 3442 switch (sdata->vif.type) { 3443 case NL80211_IFTYPE_AP: 3444 sdata->u.ap.next_beacon = 3445 cfg80211_beacon_dup(¶ms->beacon_after); 3446 if (!sdata->u.ap.next_beacon) 3447 return -ENOMEM; 3448 3449 /* 3450 * With a count of 0, we don't have to wait for any 3451 * TBTT before switching, so complete the CSA 3452 * immediately. In theory, with a count == 1 we 3453 * should delay the switch until just before the next 3454 * TBTT, but that would complicate things so we switch 3455 * immediately too. If we would delay the switch 3456 * until the next TBTT, we would have to set the probe 3457 * response here. 3458 * 3459 * TODO: A channel switch with count <= 1 without 3460 * sending a CSA action frame is kind of useless, 3461 * because the clients won't know we're changing 3462 * channels. The action frame must be implemented 3463 * either here or in the userspace. 3464 */ 3465 if (params->count <= 1) 3466 break; 3467 3468 if ((params->n_counter_offsets_beacon > 3469 IEEE80211_MAX_CNTDWN_COUNTERS_NUM) || 3470 (params->n_counter_offsets_presp > 3471 IEEE80211_MAX_CNTDWN_COUNTERS_NUM)) { 3472 ieee80211_free_next_beacon(sdata); 3473 return -EINVAL; 3474 } 3475 3476 csa.counter_offsets_beacon = params->counter_offsets_beacon; 3477 csa.counter_offsets_presp = params->counter_offsets_presp; 3478 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; 3479 csa.n_counter_offsets_presp = params->n_counter_offsets_presp; 3480 csa.count = params->count; 3481 3482 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa, NULL); 3483 if (err < 0) { 3484 ieee80211_free_next_beacon(sdata); 3485 return err; 3486 } 3487 *changed |= err; 3488 3489 break; 3490 case NL80211_IFTYPE_ADHOC: 3491 if (!sdata->vif.cfg.ibss_joined) 3492 return -EINVAL; 3493 3494 if (params->chandef.width != sdata->u.ibss.chandef.width) 3495 return -EINVAL; 3496 3497 switch (params->chandef.width) { 3498 case NL80211_CHAN_WIDTH_40: 3499 if (cfg80211_get_chandef_type(¶ms->chandef) != 3500 cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) 3501 return -EINVAL; 3502 break; 3503 case NL80211_CHAN_WIDTH_5: 3504 case NL80211_CHAN_WIDTH_10: 3505 case NL80211_CHAN_WIDTH_20_NOHT: 3506 case NL80211_CHAN_WIDTH_20: 3507 break; 3508 default: 3509 return -EINVAL; 3510 } 3511 3512 /* changes into another band are not supported */ 3513 if (sdata->u.ibss.chandef.chan->band != 3514 params->chandef.chan->band) 3515 return -EINVAL; 3516 3517 /* see comments in the NL80211_IFTYPE_AP block */ 3518 if (params->count > 1) { 3519 err = ieee80211_ibss_csa_beacon(sdata, params); 3520 if (err < 0) 3521 return err; 3522 *changed |= err; 3523 } 3524 3525 ieee80211_send_action_csa(sdata, params); 3526 3527 break; 3528 #ifdef CONFIG_MAC80211_MESH 3529 case NL80211_IFTYPE_MESH_POINT: { 3530 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; 3531 3532 if (params->chandef.width != sdata->vif.bss_conf.chandef.width) 3533 return -EINVAL; 3534 3535 /* changes into another band are not supported */ 3536 if (sdata->vif.bss_conf.chandef.chan->band != 3537 params->chandef.chan->band) 3538 return -EINVAL; 3539 3540 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { 3541 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; 3542 if (!ifmsh->pre_value) 3543 ifmsh->pre_value = 1; 3544 else 3545 ifmsh->pre_value++; 3546 } 3547 3548 /* see comments in the NL80211_IFTYPE_AP block */ 3549 if (params->count > 1) { 3550 err = ieee80211_mesh_csa_beacon(sdata, params); 3551 if (err < 0) { 3552 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; 3553 return err; 3554 } 3555 *changed |= err; 3556 } 3557 3558 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) 3559 ieee80211_send_action_csa(sdata, params); 3560 3561 break; 3562 } 3563 #endif 3564 default: 3565 return -EOPNOTSUPP; 3566 } 3567 3568 return 0; 3569 } 3570 3571 static void ieee80211_color_change_abort(struct ieee80211_sub_if_data *sdata) 3572 { 3573 sdata->vif.bss_conf.color_change_active = false; 3574 3575 ieee80211_free_next_beacon(sdata); 3576 3577 cfg80211_color_change_aborted_notify(sdata->dev); 3578 } 3579 3580 static int 3581 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3582 struct cfg80211_csa_settings *params) 3583 { 3584 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3585 struct ieee80211_local *local = sdata->local; 3586 struct ieee80211_channel_switch ch_switch; 3587 struct ieee80211_chanctx_conf *conf; 3588 struct ieee80211_chanctx *chanctx; 3589 u32 changed = 0; 3590 int err; 3591 3592 sdata_assert_lock(sdata); 3593 lockdep_assert_held(&local->mtx); 3594 3595 if (!list_empty(&local->roc_list) || local->scanning) 3596 return -EBUSY; 3597 3598 if (sdata->wdev.cac_started) 3599 return -EBUSY; 3600 3601 if (cfg80211_chandef_identical(¶ms->chandef, 3602 &sdata->vif.bss_conf.chandef)) 3603 return -EINVAL; 3604 3605 /* don't allow another channel switch if one is already active. */ 3606 if (sdata->vif.bss_conf.csa_active) 3607 return -EBUSY; 3608 3609 mutex_lock(&local->chanctx_mtx); 3610 conf = rcu_dereference_protected(sdata->vif.bss_conf.chanctx_conf, 3611 lockdep_is_held(&local->chanctx_mtx)); 3612 if (!conf) { 3613 err = -EBUSY; 3614 goto out; 3615 } 3616 3617 if (params->chandef.chan->freq_offset) { 3618 /* this may work, but is untested */ 3619 err = -EOPNOTSUPP; 3620 goto out; 3621 } 3622 3623 chanctx = container_of(conf, struct ieee80211_chanctx, conf); 3624 3625 ch_switch.timestamp = 0; 3626 ch_switch.device_timestamp = 0; 3627 ch_switch.block_tx = params->block_tx; 3628 ch_switch.chandef = params->chandef; 3629 ch_switch.count = params->count; 3630 3631 err = drv_pre_channel_switch(sdata, &ch_switch); 3632 if (err) 3633 goto out; 3634 3635 err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, 3636 chanctx->mode, 3637 params->radar_required); 3638 if (err) 3639 goto out; 3640 3641 /* if reservation is invalid then this will fail */ 3642 err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); 3643 if (err) { 3644 ieee80211_vif_unreserve_chanctx(sdata); 3645 goto out; 3646 } 3647 3648 /* if there is a color change in progress, abort it */ 3649 if (sdata->vif.bss_conf.color_change_active) 3650 ieee80211_color_change_abort(sdata); 3651 3652 err = ieee80211_set_csa_beacon(sdata, params, &changed); 3653 if (err) { 3654 ieee80211_vif_unreserve_chanctx(sdata); 3655 goto out; 3656 } 3657 3658 sdata->csa_chandef = params->chandef; 3659 sdata->csa_block_tx = params->block_tx; 3660 sdata->vif.bss_conf.csa_active = true; 3661 3662 if (sdata->csa_block_tx) 3663 ieee80211_stop_vif_queues(local, sdata, 3664 IEEE80211_QUEUE_STOP_REASON_CSA); 3665 3666 cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, 3667 params->count, params->block_tx); 3668 3669 if (changed) { 3670 ieee80211_bss_info_change_notify(sdata, changed); 3671 drv_channel_switch_beacon(sdata, ¶ms->chandef); 3672 } else { 3673 /* if the beacon didn't change, we can finalize immediately */ 3674 ieee80211_csa_finalize(sdata); 3675 } 3676 3677 out: 3678 mutex_unlock(&local->chanctx_mtx); 3679 return err; 3680 } 3681 3682 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 3683 struct cfg80211_csa_settings *params) 3684 { 3685 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3686 struct ieee80211_local *local = sdata->local; 3687 int err; 3688 3689 mutex_lock(&local->mtx); 3690 err = __ieee80211_channel_switch(wiphy, dev, params); 3691 mutex_unlock(&local->mtx); 3692 3693 return err; 3694 } 3695 3696 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local) 3697 { 3698 lockdep_assert_held(&local->mtx); 3699 3700 local->roc_cookie_counter++; 3701 3702 /* wow, you wrapped 64 bits ... more likely a bug */ 3703 if (WARN_ON(local->roc_cookie_counter == 0)) 3704 local->roc_cookie_counter++; 3705 3706 return local->roc_cookie_counter; 3707 } 3708 3709 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 3710 u64 *cookie, gfp_t gfp) 3711 { 3712 unsigned long spin_flags; 3713 struct sk_buff *ack_skb; 3714 int id; 3715 3716 ack_skb = skb_copy(skb, gfp); 3717 if (!ack_skb) 3718 return -ENOMEM; 3719 3720 spin_lock_irqsave(&local->ack_status_lock, spin_flags); 3721 id = idr_alloc(&local->ack_status_frames, ack_skb, 3722 1, 0x2000, GFP_ATOMIC); 3723 spin_unlock_irqrestore(&local->ack_status_lock, spin_flags); 3724 3725 if (id < 0) { 3726 kfree_skb(ack_skb); 3727 return -ENOMEM; 3728 } 3729 3730 IEEE80211_SKB_CB(skb)->ack_frame_id = id; 3731 3732 *cookie = ieee80211_mgmt_tx_cookie(local); 3733 IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie; 3734 3735 return 0; 3736 } 3737 3738 static void 3739 ieee80211_update_mgmt_frame_registrations(struct wiphy *wiphy, 3740 struct wireless_dev *wdev, 3741 struct mgmt_frame_regs *upd) 3742 { 3743 struct ieee80211_local *local = wiphy_priv(wiphy); 3744 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3745 u32 preq_mask = BIT(IEEE80211_STYPE_PROBE_REQ >> 4); 3746 u32 action_mask = BIT(IEEE80211_STYPE_ACTION >> 4); 3747 bool global_change, intf_change; 3748 3749 global_change = 3750 (local->probe_req_reg != !!(upd->global_stypes & preq_mask)) || 3751 (local->rx_mcast_action_reg != 3752 !!(upd->global_mcast_stypes & action_mask)); 3753 local->probe_req_reg = upd->global_stypes & preq_mask; 3754 local->rx_mcast_action_reg = upd->global_mcast_stypes & action_mask; 3755 3756 intf_change = (sdata->vif.probe_req_reg != 3757 !!(upd->interface_stypes & preq_mask)) || 3758 (sdata->vif.rx_mcast_action_reg != 3759 !!(upd->interface_mcast_stypes & action_mask)); 3760 sdata->vif.probe_req_reg = upd->interface_stypes & preq_mask; 3761 sdata->vif.rx_mcast_action_reg = 3762 upd->interface_mcast_stypes & action_mask; 3763 3764 if (!local->open_count) 3765 return; 3766 3767 if (intf_change && ieee80211_sdata_running(sdata)) 3768 drv_config_iface_filter(local, sdata, 3769 sdata->vif.probe_req_reg ? 3770 FIF_PROBE_REQ : 0, 3771 FIF_PROBE_REQ); 3772 3773 if (global_change) 3774 ieee80211_configure_filter(local); 3775 } 3776 3777 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) 3778 { 3779 struct ieee80211_local *local = wiphy_priv(wiphy); 3780 3781 if (local->started) 3782 return -EOPNOTSUPP; 3783 3784 return drv_set_antenna(local, tx_ant, rx_ant); 3785 } 3786 3787 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) 3788 { 3789 struct ieee80211_local *local = wiphy_priv(wiphy); 3790 3791 return drv_get_antenna(local, tx_ant, rx_ant); 3792 } 3793 3794 static int ieee80211_set_rekey_data(struct wiphy *wiphy, 3795 struct net_device *dev, 3796 struct cfg80211_gtk_rekey_data *data) 3797 { 3798 struct ieee80211_local *local = wiphy_priv(wiphy); 3799 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3800 3801 if (!local->ops->set_rekey_data) 3802 return -EOPNOTSUPP; 3803 3804 drv_set_rekey_data(local, sdata, data); 3805 3806 return 0; 3807 } 3808 3809 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, 3810 const u8 *peer, u64 *cookie) 3811 { 3812 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3813 struct ieee80211_local *local = sdata->local; 3814 struct ieee80211_qos_hdr *nullfunc; 3815 struct sk_buff *skb; 3816 int size = sizeof(*nullfunc); 3817 __le16 fc; 3818 bool qos; 3819 struct ieee80211_tx_info *info; 3820 struct sta_info *sta; 3821 struct ieee80211_chanctx_conf *chanctx_conf; 3822 enum nl80211_band band; 3823 int ret; 3824 3825 /* the lock is needed to assign the cookie later */ 3826 mutex_lock(&local->mtx); 3827 3828 rcu_read_lock(); 3829 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 3830 if (WARN_ON(!chanctx_conf)) { 3831 ret = -EINVAL; 3832 goto unlock; 3833 } 3834 band = chanctx_conf->def.chan->band; 3835 sta = sta_info_get_bss(sdata, peer); 3836 if (sta) { 3837 qos = sta->sta.wme; 3838 } else { 3839 ret = -ENOLINK; 3840 goto unlock; 3841 } 3842 3843 if (qos) { 3844 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3845 IEEE80211_STYPE_QOS_NULLFUNC | 3846 IEEE80211_FCTL_FROMDS); 3847 } else { 3848 size -= 2; 3849 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | 3850 IEEE80211_STYPE_NULLFUNC | 3851 IEEE80211_FCTL_FROMDS); 3852 } 3853 3854 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); 3855 if (!skb) { 3856 ret = -ENOMEM; 3857 goto unlock; 3858 } 3859 3860 skb->dev = dev; 3861 3862 skb_reserve(skb, local->hw.extra_tx_headroom); 3863 3864 nullfunc = skb_put(skb, size); 3865 nullfunc->frame_control = fc; 3866 nullfunc->duration_id = 0; 3867 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); 3868 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 3869 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); 3870 nullfunc->seq_ctrl = 0; 3871 3872 info = IEEE80211_SKB_CB(skb); 3873 3874 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | 3875 IEEE80211_TX_INTFL_NL80211_FRAME_TX; 3876 info->band = band; 3877 3878 skb_set_queue_mapping(skb, IEEE80211_AC_VO); 3879 skb->priority = 7; 3880 if (qos) 3881 nullfunc->qos_ctrl = cpu_to_le16(7); 3882 3883 ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC); 3884 if (ret) { 3885 kfree_skb(skb); 3886 goto unlock; 3887 } 3888 3889 local_bh_disable(); 3890 ieee80211_xmit(sdata, sta, skb); 3891 local_bh_enable(); 3892 3893 ret = 0; 3894 unlock: 3895 rcu_read_unlock(); 3896 mutex_unlock(&local->mtx); 3897 3898 return ret; 3899 } 3900 3901 static int ieee80211_cfg_get_channel(struct wiphy *wiphy, 3902 struct wireless_dev *wdev, 3903 unsigned int link_id, 3904 struct cfg80211_chan_def *chandef) 3905 { 3906 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 3907 struct ieee80211_local *local = wiphy_priv(wiphy); 3908 struct ieee80211_chanctx_conf *chanctx_conf; 3909 int ret = -ENODATA; 3910 3911 rcu_read_lock(); 3912 chanctx_conf = rcu_dereference(sdata->vif.bss_conf.chanctx_conf); 3913 if (chanctx_conf) { 3914 *chandef = sdata->vif.bss_conf.chandef; 3915 ret = 0; 3916 } else if (local->open_count > 0 && 3917 local->open_count == local->monitors && 3918 sdata->vif.type == NL80211_IFTYPE_MONITOR) { 3919 if (local->use_chanctx) 3920 *chandef = local->monitor_chandef; 3921 else 3922 *chandef = local->_oper_chandef; 3923 ret = 0; 3924 } 3925 rcu_read_unlock(); 3926 3927 return ret; 3928 } 3929 3930 #ifdef CONFIG_PM 3931 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) 3932 { 3933 drv_set_wakeup(wiphy_priv(wiphy), enabled); 3934 } 3935 #endif 3936 3937 static int ieee80211_set_qos_map(struct wiphy *wiphy, 3938 struct net_device *dev, 3939 struct cfg80211_qos_map *qos_map) 3940 { 3941 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3942 struct mac80211_qos_map *new_qos_map, *old_qos_map; 3943 3944 if (qos_map) { 3945 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); 3946 if (!new_qos_map) 3947 return -ENOMEM; 3948 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); 3949 } else { 3950 /* A NULL qos_map was passed to disable QoS mapping */ 3951 new_qos_map = NULL; 3952 } 3953 3954 old_qos_map = sdata_dereference(sdata->qos_map, sdata); 3955 rcu_assign_pointer(sdata->qos_map, new_qos_map); 3956 if (old_qos_map) 3957 kfree_rcu(old_qos_map, rcu_head); 3958 3959 return 0; 3960 } 3961 3962 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, 3963 struct net_device *dev, 3964 unsigned int link_id, 3965 struct cfg80211_chan_def *chandef) 3966 { 3967 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3968 int ret; 3969 u32 changed = 0; 3970 3971 ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); 3972 if (ret == 0) 3973 ieee80211_bss_info_change_notify(sdata, changed); 3974 3975 return ret; 3976 } 3977 3978 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, 3979 u8 tsid, const u8 *peer, u8 up, 3980 u16 admitted_time) 3981 { 3982 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 3983 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 3984 int ac = ieee802_1d_to_ac[up]; 3985 3986 if (sdata->vif.type != NL80211_IFTYPE_STATION) 3987 return -EOPNOTSUPP; 3988 3989 if (!(sdata->wmm_acm & BIT(up))) 3990 return -EINVAL; 3991 3992 if (ifmgd->tx_tspec[ac].admitted_time) 3993 return -EBUSY; 3994 3995 if (admitted_time) { 3996 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; 3997 ifmgd->tx_tspec[ac].tsid = tsid; 3998 ifmgd->tx_tspec[ac].up = up; 3999 } 4000 4001 return 0; 4002 } 4003 4004 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, 4005 u8 tsid, const u8 *peer) 4006 { 4007 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4008 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 4009 struct ieee80211_local *local = wiphy_priv(wiphy); 4010 int ac; 4011 4012 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { 4013 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; 4014 4015 /* skip unused entries */ 4016 if (!tx_tspec->admitted_time) 4017 continue; 4018 4019 if (tx_tspec->tsid != tsid) 4020 continue; 4021 4022 /* due to this new packets will be reassigned to non-ACM ACs */ 4023 tx_tspec->up = -1; 4024 4025 /* Make sure that all packets have been sent to avoid to 4026 * restore the QoS params on packets that are still on the 4027 * queues. 4028 */ 4029 synchronize_net(); 4030 ieee80211_flush_queues(local, sdata, false); 4031 4032 /* restore the normal QoS parameters 4033 * (unconditionally to avoid races) 4034 */ 4035 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; 4036 tx_tspec->downgraded = false; 4037 ieee80211_sta_handle_tspec_ac_params(sdata); 4038 4039 /* finally clear all the data */ 4040 memset(tx_tspec, 0, sizeof(*tx_tspec)); 4041 4042 return 0; 4043 } 4044 4045 return -ENOENT; 4046 } 4047 4048 void ieee80211_nan_func_terminated(struct ieee80211_vif *vif, 4049 u8 inst_id, 4050 enum nl80211_nan_func_term_reason reason, 4051 gfp_t gfp) 4052 { 4053 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4054 struct cfg80211_nan_func *func; 4055 u64 cookie; 4056 4057 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN)) 4058 return; 4059 4060 spin_lock_bh(&sdata->u.nan.func_lock); 4061 4062 func = idr_find(&sdata->u.nan.function_inst_ids, inst_id); 4063 if (WARN_ON(!func)) { 4064 spin_unlock_bh(&sdata->u.nan.func_lock); 4065 return; 4066 } 4067 4068 cookie = func->cookie; 4069 idr_remove(&sdata->u.nan.function_inst_ids, inst_id); 4070 4071 spin_unlock_bh(&sdata->u.nan.func_lock); 4072 4073 cfg80211_free_nan_func(func); 4074 4075 cfg80211_nan_func_terminated(ieee80211_vif_to_wdev(vif), inst_id, 4076 reason, cookie, gfp); 4077 } 4078 EXPORT_SYMBOL(ieee80211_nan_func_terminated); 4079 4080 void ieee80211_nan_func_match(struct ieee80211_vif *vif, 4081 struct cfg80211_nan_match_params *match, 4082 gfp_t gfp) 4083 { 4084 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4085 struct cfg80211_nan_func *func; 4086 4087 if (WARN_ON(vif->type != NL80211_IFTYPE_NAN)) 4088 return; 4089 4090 spin_lock_bh(&sdata->u.nan.func_lock); 4091 4092 func = idr_find(&sdata->u.nan.function_inst_ids, match->inst_id); 4093 if (WARN_ON(!func)) { 4094 spin_unlock_bh(&sdata->u.nan.func_lock); 4095 return; 4096 } 4097 match->cookie = func->cookie; 4098 4099 spin_unlock_bh(&sdata->u.nan.func_lock); 4100 4101 cfg80211_nan_match(ieee80211_vif_to_wdev(vif), match, gfp); 4102 } 4103 EXPORT_SYMBOL(ieee80211_nan_func_match); 4104 4105 static int ieee80211_set_multicast_to_unicast(struct wiphy *wiphy, 4106 struct net_device *dev, 4107 const bool enabled) 4108 { 4109 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4110 4111 sdata->u.ap.multicast_to_unicast = enabled; 4112 4113 return 0; 4114 } 4115 4116 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 4117 struct txq_info *txqi) 4118 { 4119 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_BYTES))) { 4120 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_BYTES); 4121 txqstats->backlog_bytes = txqi->tin.backlog_bytes; 4122 } 4123 4124 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS))) { 4125 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS); 4126 txqstats->backlog_packets = txqi->tin.backlog_packets; 4127 } 4128 4129 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_FLOWS))) { 4130 txqstats->filled |= BIT(NL80211_TXQ_STATS_FLOWS); 4131 txqstats->flows = txqi->tin.flows; 4132 } 4133 4134 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_DROPS))) { 4135 txqstats->filled |= BIT(NL80211_TXQ_STATS_DROPS); 4136 txqstats->drops = txqi->cstats.drop_count; 4137 } 4138 4139 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_ECN_MARKS))) { 4140 txqstats->filled |= BIT(NL80211_TXQ_STATS_ECN_MARKS); 4141 txqstats->ecn_marks = txqi->cstats.ecn_mark; 4142 } 4143 4144 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_OVERLIMIT))) { 4145 txqstats->filled |= BIT(NL80211_TXQ_STATS_OVERLIMIT); 4146 txqstats->overlimit = txqi->tin.overlimit; 4147 } 4148 4149 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_COLLISIONS))) { 4150 txqstats->filled |= BIT(NL80211_TXQ_STATS_COLLISIONS); 4151 txqstats->collisions = txqi->tin.collisions; 4152 } 4153 4154 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_BYTES))) { 4155 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_BYTES); 4156 txqstats->tx_bytes = txqi->tin.tx_bytes; 4157 } 4158 4159 if (!(txqstats->filled & BIT(NL80211_TXQ_STATS_TX_PACKETS))) { 4160 txqstats->filled |= BIT(NL80211_TXQ_STATS_TX_PACKETS); 4161 txqstats->tx_packets = txqi->tin.tx_packets; 4162 } 4163 } 4164 4165 static int ieee80211_get_txq_stats(struct wiphy *wiphy, 4166 struct wireless_dev *wdev, 4167 struct cfg80211_txq_stats *txqstats) 4168 { 4169 struct ieee80211_local *local = wiphy_priv(wiphy); 4170 struct ieee80211_sub_if_data *sdata; 4171 int ret = 0; 4172 4173 if (!local->ops->wake_tx_queue) 4174 return 1; 4175 4176 spin_lock_bh(&local->fq.lock); 4177 rcu_read_lock(); 4178 4179 if (wdev) { 4180 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); 4181 if (!sdata->vif.txq) { 4182 ret = 1; 4183 goto out; 4184 } 4185 ieee80211_fill_txq_stats(txqstats, to_txq_info(sdata->vif.txq)); 4186 } else { 4187 /* phy stats */ 4188 txqstats->filled |= BIT(NL80211_TXQ_STATS_BACKLOG_PACKETS) | 4189 BIT(NL80211_TXQ_STATS_BACKLOG_BYTES) | 4190 BIT(NL80211_TXQ_STATS_OVERLIMIT) | 4191 BIT(NL80211_TXQ_STATS_OVERMEMORY) | 4192 BIT(NL80211_TXQ_STATS_COLLISIONS) | 4193 BIT(NL80211_TXQ_STATS_MAX_FLOWS); 4194 txqstats->backlog_packets = local->fq.backlog; 4195 txqstats->backlog_bytes = local->fq.memory_usage; 4196 txqstats->overlimit = local->fq.overlimit; 4197 txqstats->overmemory = local->fq.overmemory; 4198 txqstats->collisions = local->fq.collisions; 4199 txqstats->max_flows = local->fq.flows_cnt; 4200 } 4201 4202 out: 4203 rcu_read_unlock(); 4204 spin_unlock_bh(&local->fq.lock); 4205 4206 return ret; 4207 } 4208 4209 static int 4210 ieee80211_get_ftm_responder_stats(struct wiphy *wiphy, 4211 struct net_device *dev, 4212 struct cfg80211_ftm_responder_stats *ftm_stats) 4213 { 4214 struct ieee80211_local *local = wiphy_priv(wiphy); 4215 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4216 4217 return drv_get_ftm_responder_stats(local, sdata, ftm_stats); 4218 } 4219 4220 static int 4221 ieee80211_start_pmsr(struct wiphy *wiphy, struct wireless_dev *dev, 4222 struct cfg80211_pmsr_request *request) 4223 { 4224 struct ieee80211_local *local = wiphy_priv(wiphy); 4225 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev); 4226 4227 return drv_start_pmsr(local, sdata, request); 4228 } 4229 4230 static void 4231 ieee80211_abort_pmsr(struct wiphy *wiphy, struct wireless_dev *dev, 4232 struct cfg80211_pmsr_request *request) 4233 { 4234 struct ieee80211_local *local = wiphy_priv(wiphy); 4235 struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(dev); 4236 4237 return drv_abort_pmsr(local, sdata, request); 4238 } 4239 4240 static int ieee80211_set_tid_config(struct wiphy *wiphy, 4241 struct net_device *dev, 4242 struct cfg80211_tid_config *tid_conf) 4243 { 4244 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4245 struct sta_info *sta; 4246 int ret; 4247 4248 if (!sdata->local->ops->set_tid_config) 4249 return -EOPNOTSUPP; 4250 4251 if (!tid_conf->peer) 4252 return drv_set_tid_config(sdata->local, sdata, NULL, tid_conf); 4253 4254 mutex_lock(&sdata->local->sta_mtx); 4255 sta = sta_info_get_bss(sdata, tid_conf->peer); 4256 if (!sta) { 4257 mutex_unlock(&sdata->local->sta_mtx); 4258 return -ENOENT; 4259 } 4260 4261 ret = drv_set_tid_config(sdata->local, sdata, &sta->sta, tid_conf); 4262 mutex_unlock(&sdata->local->sta_mtx); 4263 4264 return ret; 4265 } 4266 4267 static int ieee80211_reset_tid_config(struct wiphy *wiphy, 4268 struct net_device *dev, 4269 const u8 *peer, u8 tids) 4270 { 4271 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4272 struct sta_info *sta; 4273 int ret; 4274 4275 if (!sdata->local->ops->reset_tid_config) 4276 return -EOPNOTSUPP; 4277 4278 if (!peer) 4279 return drv_reset_tid_config(sdata->local, sdata, NULL, tids); 4280 4281 mutex_lock(&sdata->local->sta_mtx); 4282 sta = sta_info_get_bss(sdata, peer); 4283 if (!sta) { 4284 mutex_unlock(&sdata->local->sta_mtx); 4285 return -ENOENT; 4286 } 4287 4288 ret = drv_reset_tid_config(sdata->local, sdata, &sta->sta, tids); 4289 mutex_unlock(&sdata->local->sta_mtx); 4290 4291 return ret; 4292 } 4293 4294 static int ieee80211_set_sar_specs(struct wiphy *wiphy, 4295 struct cfg80211_sar_specs *sar) 4296 { 4297 struct ieee80211_local *local = wiphy_priv(wiphy); 4298 4299 if (!local->ops->set_sar_specs) 4300 return -EOPNOTSUPP; 4301 4302 return local->ops->set_sar_specs(&local->hw, sar); 4303 } 4304 4305 static int 4306 ieee80211_set_after_color_change_beacon(struct ieee80211_sub_if_data *sdata, 4307 u32 *changed) 4308 { 4309 switch (sdata->vif.type) { 4310 case NL80211_IFTYPE_AP: { 4311 int ret; 4312 4313 if (!sdata->u.ap.next_beacon) 4314 return -EINVAL; 4315 4316 ret = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, 4317 NULL, NULL); 4318 ieee80211_free_next_beacon(sdata); 4319 4320 if (ret < 0) 4321 return ret; 4322 4323 *changed |= ret; 4324 break; 4325 } 4326 default: 4327 WARN_ON_ONCE(1); 4328 return -EINVAL; 4329 } 4330 4331 return 0; 4332 } 4333 4334 static int 4335 ieee80211_set_color_change_beacon(struct ieee80211_sub_if_data *sdata, 4336 struct cfg80211_color_change_settings *params, 4337 u32 *changed) 4338 { 4339 struct ieee80211_color_change_settings color_change = {}; 4340 int err; 4341 4342 switch (sdata->vif.type) { 4343 case NL80211_IFTYPE_AP: 4344 sdata->u.ap.next_beacon = 4345 cfg80211_beacon_dup(¶ms->beacon_next); 4346 if (!sdata->u.ap.next_beacon) 4347 return -ENOMEM; 4348 4349 if (params->count <= 1) 4350 break; 4351 4352 color_change.counter_offset_beacon = 4353 params->counter_offset_beacon; 4354 color_change.counter_offset_presp = 4355 params->counter_offset_presp; 4356 color_change.count = params->count; 4357 4358 err = ieee80211_assign_beacon(sdata, ¶ms->beacon_color_change, 4359 NULL, &color_change); 4360 if (err < 0) { 4361 ieee80211_free_next_beacon(sdata); 4362 return err; 4363 } 4364 *changed |= err; 4365 break; 4366 default: 4367 return -EOPNOTSUPP; 4368 } 4369 4370 return 0; 4371 } 4372 4373 static void 4374 ieee80211_color_change_bss_config_notify(struct ieee80211_sub_if_data *sdata, 4375 u8 color, int enable, u32 changed) 4376 { 4377 sdata->vif.bss_conf.he_bss_color.color = color; 4378 sdata->vif.bss_conf.he_bss_color.enabled = enable; 4379 changed |= BSS_CHANGED_HE_BSS_COLOR; 4380 4381 ieee80211_bss_info_change_notify(sdata, changed); 4382 4383 if (!sdata->vif.bss_conf.nontransmitted && sdata->vif.mbssid_tx_vif) { 4384 struct ieee80211_sub_if_data *child; 4385 4386 mutex_lock(&sdata->local->iflist_mtx); 4387 list_for_each_entry(child, &sdata->local->interfaces, list) { 4388 if (child != sdata && child->vif.mbssid_tx_vif == &sdata->vif) { 4389 child->vif.bss_conf.he_bss_color.color = color; 4390 child->vif.bss_conf.he_bss_color.enabled = enable; 4391 ieee80211_bss_info_change_notify(child, 4392 BSS_CHANGED_HE_BSS_COLOR); 4393 } 4394 } 4395 mutex_unlock(&sdata->local->iflist_mtx); 4396 } 4397 } 4398 4399 static int ieee80211_color_change_finalize(struct ieee80211_sub_if_data *sdata) 4400 { 4401 struct ieee80211_local *local = sdata->local; 4402 u32 changed = 0; 4403 int err; 4404 4405 sdata_assert_lock(sdata); 4406 lockdep_assert_held(&local->mtx); 4407 4408 sdata->vif.bss_conf.color_change_active = false; 4409 4410 err = ieee80211_set_after_color_change_beacon(sdata, &changed); 4411 if (err) { 4412 cfg80211_color_change_aborted_notify(sdata->dev); 4413 return err; 4414 } 4415 4416 ieee80211_color_change_bss_config_notify(sdata, 4417 sdata->vif.bss_conf.color_change_color, 4418 1, changed); 4419 cfg80211_color_change_notify(sdata->dev); 4420 4421 return 0; 4422 } 4423 4424 void ieee80211_color_change_finalize_work(struct work_struct *work) 4425 { 4426 struct ieee80211_sub_if_data *sdata = 4427 container_of(work, struct ieee80211_sub_if_data, 4428 color_change_finalize_work); 4429 struct ieee80211_local *local = sdata->local; 4430 4431 sdata_lock(sdata); 4432 mutex_lock(&local->mtx); 4433 4434 /* AP might have been stopped while waiting for the lock. */ 4435 if (!sdata->vif.bss_conf.color_change_active) 4436 goto unlock; 4437 4438 if (!ieee80211_sdata_running(sdata)) 4439 goto unlock; 4440 4441 ieee80211_color_change_finalize(sdata); 4442 4443 unlock: 4444 mutex_unlock(&local->mtx); 4445 sdata_unlock(sdata); 4446 } 4447 4448 void ieee80211_color_change_finish(struct ieee80211_vif *vif) 4449 { 4450 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4451 4452 ieee80211_queue_work(&sdata->local->hw, 4453 &sdata->color_change_finalize_work); 4454 } 4455 EXPORT_SYMBOL_GPL(ieee80211_color_change_finish); 4456 4457 void 4458 ieeee80211_obss_color_collision_notify(struct ieee80211_vif *vif, 4459 u64 color_bitmap) 4460 { 4461 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 4462 4463 if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active) 4464 return; 4465 4466 cfg80211_obss_color_collision_notify(sdata->dev, color_bitmap); 4467 } 4468 EXPORT_SYMBOL_GPL(ieeee80211_obss_color_collision_notify); 4469 4470 static int 4471 ieee80211_color_change(struct wiphy *wiphy, struct net_device *dev, 4472 struct cfg80211_color_change_settings *params) 4473 { 4474 struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); 4475 struct ieee80211_local *local = sdata->local; 4476 u32 changed = 0; 4477 int err; 4478 4479 sdata_assert_lock(sdata); 4480 4481 if (sdata->vif.bss_conf.nontransmitted) 4482 return -EINVAL; 4483 4484 mutex_lock(&local->mtx); 4485 4486 /* don't allow another color change if one is already active or if csa 4487 * is active 4488 */ 4489 if (sdata->vif.bss_conf.color_change_active || sdata->vif.bss_conf.csa_active) { 4490 err = -EBUSY; 4491 goto out; 4492 } 4493 4494 err = ieee80211_set_color_change_beacon(sdata, params, &changed); 4495 if (err) 4496 goto out; 4497 4498 sdata->vif.bss_conf.color_change_active = true; 4499 sdata->vif.bss_conf.color_change_color = params->color; 4500 4501 cfg80211_color_change_started_notify(sdata->dev, params->count); 4502 4503 if (changed) 4504 ieee80211_color_change_bss_config_notify(sdata, 0, 0, changed); 4505 else 4506 /* if the beacon didn't change, we can finalize immediately */ 4507 ieee80211_color_change_finalize(sdata); 4508 4509 out: 4510 mutex_unlock(&local->mtx); 4511 4512 return err; 4513 } 4514 4515 static int 4516 ieee80211_set_radar_background(struct wiphy *wiphy, 4517 struct cfg80211_chan_def *chandef) 4518 { 4519 struct ieee80211_local *local = wiphy_priv(wiphy); 4520 4521 if (!local->ops->set_radar_background) 4522 return -EOPNOTSUPP; 4523 4524 return local->ops->set_radar_background(&local->hw, chandef); 4525 } 4526 4527 const struct cfg80211_ops mac80211_config_ops = { 4528 .add_virtual_intf = ieee80211_add_iface, 4529 .del_virtual_intf = ieee80211_del_iface, 4530 .change_virtual_intf = ieee80211_change_iface, 4531 .start_p2p_device = ieee80211_start_p2p_device, 4532 .stop_p2p_device = ieee80211_stop_p2p_device, 4533 .add_key = ieee80211_add_key, 4534 .del_key = ieee80211_del_key, 4535 .get_key = ieee80211_get_key, 4536 .set_default_key = ieee80211_config_default_key, 4537 .set_default_mgmt_key = ieee80211_config_default_mgmt_key, 4538 .set_default_beacon_key = ieee80211_config_default_beacon_key, 4539 .start_ap = ieee80211_start_ap, 4540 .change_beacon = ieee80211_change_beacon, 4541 .stop_ap = ieee80211_stop_ap, 4542 .add_station = ieee80211_add_station, 4543 .del_station = ieee80211_del_station, 4544 .change_station = ieee80211_change_station, 4545 .get_station = ieee80211_get_station, 4546 .dump_station = ieee80211_dump_station, 4547 .dump_survey = ieee80211_dump_survey, 4548 #ifdef CONFIG_MAC80211_MESH 4549 .add_mpath = ieee80211_add_mpath, 4550 .del_mpath = ieee80211_del_mpath, 4551 .change_mpath = ieee80211_change_mpath, 4552 .get_mpath = ieee80211_get_mpath, 4553 .dump_mpath = ieee80211_dump_mpath, 4554 .get_mpp = ieee80211_get_mpp, 4555 .dump_mpp = ieee80211_dump_mpp, 4556 .update_mesh_config = ieee80211_update_mesh_config, 4557 .get_mesh_config = ieee80211_get_mesh_config, 4558 .join_mesh = ieee80211_join_mesh, 4559 .leave_mesh = ieee80211_leave_mesh, 4560 #endif 4561 .join_ocb = ieee80211_join_ocb, 4562 .leave_ocb = ieee80211_leave_ocb, 4563 .change_bss = ieee80211_change_bss, 4564 .set_txq_params = ieee80211_set_txq_params, 4565 .set_monitor_channel = ieee80211_set_monitor_channel, 4566 .suspend = ieee80211_suspend, 4567 .resume = ieee80211_resume, 4568 .scan = ieee80211_scan, 4569 .abort_scan = ieee80211_abort_scan, 4570 .sched_scan_start = ieee80211_sched_scan_start, 4571 .sched_scan_stop = ieee80211_sched_scan_stop, 4572 .auth = ieee80211_auth, 4573 .assoc = ieee80211_assoc, 4574 .deauth = ieee80211_deauth, 4575 .disassoc = ieee80211_disassoc, 4576 .join_ibss = ieee80211_join_ibss, 4577 .leave_ibss = ieee80211_leave_ibss, 4578 .set_mcast_rate = ieee80211_set_mcast_rate, 4579 .set_wiphy_params = ieee80211_set_wiphy_params, 4580 .set_tx_power = ieee80211_set_tx_power, 4581 .get_tx_power = ieee80211_get_tx_power, 4582 .rfkill_poll = ieee80211_rfkill_poll, 4583 CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) 4584 CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) 4585 .set_power_mgmt = ieee80211_set_power_mgmt, 4586 .set_bitrate_mask = ieee80211_set_bitrate_mask, 4587 .remain_on_channel = ieee80211_remain_on_channel, 4588 .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, 4589 .mgmt_tx = ieee80211_mgmt_tx, 4590 .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, 4591 .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, 4592 .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config, 4593 .update_mgmt_frame_registrations = 4594 ieee80211_update_mgmt_frame_registrations, 4595 .set_antenna = ieee80211_set_antenna, 4596 .get_antenna = ieee80211_get_antenna, 4597 .set_rekey_data = ieee80211_set_rekey_data, 4598 .tdls_oper = ieee80211_tdls_oper, 4599 .tdls_mgmt = ieee80211_tdls_mgmt, 4600 .tdls_channel_switch = ieee80211_tdls_channel_switch, 4601 .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, 4602 .probe_client = ieee80211_probe_client, 4603 .set_noack_map = ieee80211_set_noack_map, 4604 #ifdef CONFIG_PM 4605 .set_wakeup = ieee80211_set_wakeup, 4606 #endif 4607 .get_channel = ieee80211_cfg_get_channel, 4608 .start_radar_detection = ieee80211_start_radar_detection, 4609 .end_cac = ieee80211_end_cac, 4610 .channel_switch = ieee80211_channel_switch, 4611 .set_qos_map = ieee80211_set_qos_map, 4612 .set_ap_chanwidth = ieee80211_set_ap_chanwidth, 4613 .add_tx_ts = ieee80211_add_tx_ts, 4614 .del_tx_ts = ieee80211_del_tx_ts, 4615 .start_nan = ieee80211_start_nan, 4616 .stop_nan = ieee80211_stop_nan, 4617 .nan_change_conf = ieee80211_nan_change_conf, 4618 .add_nan_func = ieee80211_add_nan_func, 4619 .del_nan_func = ieee80211_del_nan_func, 4620 .set_multicast_to_unicast = ieee80211_set_multicast_to_unicast, 4621 .tx_control_port = ieee80211_tx_control_port, 4622 .get_txq_stats = ieee80211_get_txq_stats, 4623 .get_ftm_responder_stats = ieee80211_get_ftm_responder_stats, 4624 .start_pmsr = ieee80211_start_pmsr, 4625 .abort_pmsr = ieee80211_abort_pmsr, 4626 .probe_mesh_link = ieee80211_probe_mesh_link, 4627 .set_tid_config = ieee80211_set_tid_config, 4628 .reset_tid_config = ieee80211_reset_tid_config, 4629 .set_sar_specs = ieee80211_set_sar_specs, 4630 .color_change = ieee80211_color_change, 4631 .set_radar_background = ieee80211_set_radar_background, 4632 }; 4633